You are more likely to have good mental and emotional health

a.
if you are younger than 50
b.
if you're never by yourself
c.
if you have a strong support system
d.
if you have a high-paying job

C makes the most sense. Being over 50 doesn't mean your health will necessarily suffer. Some people have anxiety and other disorders which involve a lot of people around them. And money doesn't buy happiness so you may still get depressed. But, if you have a strong support system it will build you up when you're down and help you get better and feel better.

You'll likely have good mental and emotional health if you C. have a strong support system. 

You can have poor mental and emotional health no matter what age you are, so A wouldn't be right. 

Never being by yourself would be impossible, and it's always good to have alone time. 

Having a high-paying job can actually cause more stress, anxiety, and depression, so it would not be the cause of good mental and emotional health.

Mis useing driving his or her license will be suspended for one year

The answer would be true.