The correct answer is A. Research the growth or decline of the industries in her area, and think about the advantage or disadvantages of that growth or decline.
Explanation:
Finding an appropriate topic is one of the steps a person will need to complete before writing, this process consist of choosing a topic and/or deciding which is going to be the focus in a specific topic, for doing this the author can use brainstorming, which is generating ideas spontaneously; background information which means the writer looks for different documents on the main topic or making a list of possible topics and then choose the most appropriate one. Considering this in Khianna case the most appropriate way of choosing a topic is researching or looking for other resources that analyze how industries have changed in her area, because industries are an important part of the economy as these are the entities that produce goods and services, this implies this option is related to Khiana topic and it is an easy way to get an idea for her topic which is economy. Also, other options are not related to this topic which is the topic of Khianna.
