B: will have no heirs to the throne
A, B, and D begin statements that can stand by themselves logically. C begins a statement that shows how the previous statement and itself are connected. As such, the answer is C(As a result).
Talking about your feelings can help you stay in good mental health and deal with times when you feel troubled. ... It's part of taking charge of your wellbeing and doing what you can to stay healthy. Talking can be a way to cope with a problem you've been carrying around in your head for a while.
"He plans to become a test pilot for experimental aircraft."
The answer is option A.