Correct Answer: B) parallel to OY

Correct Answer: B. drove out those who sold in the Temple

Correct Answer: D. measuring farms with irregular boundaries

Correct Answer: C) negatively sloped

Explanation

The question is asking about the demand curve that a pure monopolist faces. A pure monopolist is a single seller in the market, without any close substitutes. The demand curve shows the relationship between the price of a product and the quantity demanded of that product. The question is asking about the shape of the demand curve that the pure monopolist faces.

Option A states that the demand curve facing the pure monopolist is perfectly price elastic. This means that an increase in price will cause a decrease in quantity demanded to the point where the increase in revenue from selling at a higher price is exactly offset by the decrease in revenue from selling fewer units. This option is incorrect for a pure monopolist because a monopolist has the power to set its own price and the demand for its product is not perfectly elastic.

Option B states that the demand curve facing the pure monopolist is perfectly price inelastic. This means that the quantity demanded is not affected by changes in price. This option is incorrect because a monopolist has some power to set the price but the demand for its product is not completely insensitive to price changes.

Option C is the correct answer. It states that the demand curve facing the pure monopolist is negatively sloped. This means that as the price of the product increases, the quantity demanded decreases. A monopolist has some power to set the price, but it must balance the desire to sell more units at a lower price with the desire to sell fewer units at a higher price.

Option D states that the demand curve facing the pure monopolist is positively sloped. This means that as the price of the product increases, the quantity demanded also increases. This option is incorrect because a monopolist cannot increase the quantity demanded by raising the price.

In summary, the correct option is option C, which states that the demand curve facing the pure monopolist is negatively sloped. This means that as the price of the product increases, the quantity demanded decreases. A monopolist has some power to set the price, but it must balance the desire to sell more units at a lower price with the desire to sell fewer units at a higher price.

Correct Answer: D. 24

Correct Answer: A. leaf miners

Correct Answer: A. anger

Correct Answer: B. rigid

Explanation

Types of agricultural systems that exist in West Africa are as follow:

(i) Peasant farming system:This involves the cultivation on a small scale acres of land. Farms are small units owned by individual families. This is also referred to as subsistence agriculture because it is the production of agricultural products for direct consumption by the producers and their families. This system impedes mass agricultural production.

(ii) Plantation farming: This is large scale farming on plantation or estate. This system of agriculture allows for a high degree of mechanization and other aspects of modernization. Capital intensive methods are often employed. Such crops planted on plantation farming include cocoa, tea, cotton, rubber and sugar cane. Moor-plantation in Ibadan is an example of modern agricultural practice. It could be owned by individuals or government.

(iii) Mechanized farming: This involves the extensive use of machines and other types of advanced mechanical devices in agricultural production. Mechanized agriculture ensures large scale production because human labour is replaced with that of machine such and tractors, harvesters, incubators etc.

(iv) Co-operative farming:This is a type in which co-operators may own a large expanse of cultivable land together and work and share the product of their labour. This type of farming is adopted in order to obtain loans and aids from government. This system also allows for mechanization.

Correct Answer: B. 0.280dm³