Thunderstorm can be beneficial to plants because it

Explanation

Thunderstorms can be helpful to plants in several ways. One of the ways is by adding nutrients to the soil. When lightning strikes the ground, it converts atmospheric nitrogen into nitrates, which can be absorbed by the soil and utilized by plants. Therefore, option C is correct. Thunderstorms do not kill pests that attack crops, so option A is incorrect. Similarly, thunderstorms do not add lime to the soil, so option B is incorrect. Although thunderstorms can make rainwater available to plants, this is not the main way in which thunderstorms benefit plants, so option D is also incorrect. It is important to note that while thunderstorms can be beneficial to plants, they can also be harmful, causing damage to crops and even leading to soil erosion.