The correct answer is C. To to see how temperature affects plants
Explanation:
The purpose of an introduction is to explain the focus and topic of a text. In the case of the introduction presented, the focus is "how temperature affects plants" (Option C). This is because from the beginning of the text the author mentions how temperature affects living creatures. Indeed, the author uses statements such as "Think about the way your body feels after a swim in a cold pool" to introduce the topic. Also, after this general introduction the author focuses on the effects temperature has on plants, this can be seen in statements such as "How does temperature affect plants?" or "Do they photosynthesize faster in cold weather or hot?".
