Answer:
Midlife crisis.
Explanation:
As the exercise suggests in the example, what Aja fears her husband will be engaged in is in a midlife crisis. This is usually defined as feelings of anxiety or disappointment in their lives that, perhaps, is found out at that age. Therefore, Aja fears that her husband will encounter those feelings and will begin to compensate with "adventurous" things like seeing younger women.
D. Marco Polo
Explanation: All of the others where conquistadors from europe who were enlisted by royal families
The study may be biased. It implies the untruthful with results that are not correlated with the thesis.
It should be D ;) hope this helped
Honest ignorance or knavish hypocricy by john adams.