[Q]: How does the sentence end?

Katrina made sure to help organise the big event for Rachel's big speech because

[A]: Rachel was the speaker.

[Q]: How does the sentence end?

Bob did not have a lot of free time, so he watched movies more than TV shows, because the

[A]: TV shows required more time commitment to finish a story arc.

[Q]: How does the sentence end?

She tried to count the calories instead of the carbohydrates in the avocado because the

[A]:
calories was a more critical measure of her food intake.