Story needs to be completed:
Samantha was able to successfully breed and sell several pairs of lovebirds but Sarah could not, because 
OPTIONS:
- Samantha was unskilled at handling animals.
- Sarah was unskilled at handling animals.

My choice:
Sarah was unskilled at handling animals.
Problem: Continue the following story.

Laura attained much better grades in school than Elena did because 
OPTIONS:
- Laura studied really hard.
- Elena studied really hard.
Here's how I want to continue it: Laura studied really hard.
Problem: The cabinets were so unorganized until he bought bins to help sort the clutter.  The 
OPTIONS:
- bins fixed in place.
- cabinets fixed in place.

My choice: cabinets fixed in place.
[Q]: How does the sentence end?

Going vegan was more difficult for Logan than Michael, because 
OPTIONS:
- Logan was raised on eating lots of vegetables.
- Michael was raised on eating lots of vegetables.

[A]: Michael was raised on eating lots of vegetables.
QUES: Continue writing.

Craig wanted to help Steven move forward after the breakup because 

OPTIONS:
- Craig wanted them to be happy again.
- Steven wanted them to be happy again.
+++++++++
ANS: Craig wanted them to be happy again.
QUES: Continue writing.

Rebecca will jog past Sarah every morning because 

OPTIONS:
- Rebecca prefers to be in last place.
- Sarah prefers to be in last place.
+++++++++
ANS:
Sarah prefers to be in last place.