[Q]: How does the sentence end?

Mary asked Rebecca what the chemical symbol for nitrogen was because 
OPTIONS:
- Mary could not remember.
- Rebecca could not remember.

[A]: Mary could not remember.


[Q]: How does the sentence end?

Laura wanted Natalie to hang a hammock in the backyard because 
OPTIONS:
- Laura is shorter than the other.
- Natalie is shorter than the other.

[A]: Laura is shorter than the other.


[Q]: How does the sentence end?

It was easier to teach the students to configure the server than the router because the 
OPTIONS:
- server was complex.
- router was complex.

[A]:
router was complex.