Final answer:
The proportion of entering collegians considering it very important or essential to become very well-off financially has fluctuated unpredictably between 1970 and 2014.
Step-by-step explanation:
The question asks about the proportion of entering collegians who consider it very important or essential to become very well-off financially between 1970 and 2014. Based on the given information, we cannot determine the specific changes in this proportion. Therefore, the correct answer is d) Fluctuated unpredictably.