[Q]: How does the sentence end?

Since Robert experienced many more personal crises and difficulties than Joel,

[A]: Robert had many problems with depression and anxiety.

[Q]: How does the sentence end?

After being treated for post traumatic shock, Christine thanked Jennifer, because

[A]: Jennifer had provided the help.

[Q]: How does the sentence end?

Kenneth worked very hard at their career but Steven barely tried, so

[A]:
Kenneth became very rich and secure.