The answer is: C. both a and b
Midlife transition typically happen between the age of 35 -45. During this period, people would often conduct a self-examination on whether they are fulfilling their true potential in their life. If they believe they don't, then they would most likely experience a midlife crisis and started to seek various excitement to cope with the desperation.
It has a positive value.
We need the answers that you have to choose from.