Answer:
B. The hard work you do now will prepare you for better jobs later.
Explanation:
Although the underlined sentence mentions summer interning programs, it does not suggest that you will be able to hire summer interns; that eliminates choice A.
Although the word "invest" is often associated with money, it can also be associated with putting in time or effort. In this sentence, you are investing in your future, which is more associated with time and being successful in the future, rather than simply "earning money" and "buying whatever you like later." Eliminate choice C.
Choice B is the only remaining option, but let's also analyze it: the first paragraph in the picture provided discusses the various ways young adults are putting in hard work and effort; that supports the first half of choice B, the "hard work you do now." The other half, the "invest in your future" part, then aligns with preparation for better jobs. Thus, choice B, as a broader choice than choice C, as well as a more accurate choice than choice A, is the correct answer.