Correct Answer: C. with

Correct Answer: C. either may be used to measure the weight of a substance

Correct Answer: A. be nursing a hidden a last agenda

Correct Answer: D. One hundred and forty eight thousand and thirteen

Correct Answer: D. urea

Correct Answer: A. advertising, personal selling and publicity

Correct Answer: C) another good may have been purchased instead of it

Explanation

In economics, a commodity refers to a good or service that is traded in the market. An opportunity cost refers to the cost of an alternative that must be forgone in order to pursue a certain action. Therefore, a commodity is said to have an opportunity cost because choosing to consume or purchase it means that an individual must give up the opportunity to consume or purchase another good.

The question asks why a commodity has an opportunity cost and presents four options to choose from. Option A suggests that a commodity has an opportunity cost because the price of the commodity is high, but this is incorrect. The price of a commodity does not determine its opportunity cost.

Option B suggests that a commodity has an opportunity cost because it is scarce. While scarcity may affect the price of a commodity, it does not necessarily mean that the commodity has an opportunity cost.

Option C is the correct option. It suggests that a commodity has an opportunity cost because choosing to consume or purchase it means that an individual must give up the opportunity to consume or purchase another good.

Option D suggests that a commodity has an opportunity cost because it provides many benefits. However, this does not necessarily imply that the commodity has an opportunity cost.

To summarize, a commodity has an opportunity cost because choosing to consume or purchase it means that an individual must give up the opportunity to consume or purchase another good.

Correct Answer: B) companion cell

Explanation

The question is asking about the living part of phloem tissue. Phloem tissue is responsible for the transportation of organic nutrients, such as sugars, from the leaves to the rest of the plant. The options provided are sieve plate, companion cell, sieve element, and cytoplasm. The correct answer is option B, companion cell. The phloem tissue is made up of two main types of cells, sieve elements and companion cells. The sieve elements are responsible for transporting the nutrients, while the companion cells support the sieve elements by providing them with energy and other necessary materials. The sieve plates, option A, are actually non-living structures found in the sieve elements that help facilitate the movement of nutrients. The sieve elements, option C, are also involved in nutrient transportation, but they are not the living part of the phloem tissue. The cytoplasm, option D, is a component found in all living cells, but it is not specific to phloem tissue. Understanding the different parts of phloem tissue is important for comprehending how plants transport nutrients throughout their body. To learn more about this, please read the relevant sections of the recommended textbooks.

Correct Answer: B. rhetorical

Correct Answer: D. open market operation