Problem: How does the sentence end?

We kept the gold in the safe rather than the drawer, as the 
Answer: safe was more secure.

Problem: How does the sentence end?

Monica drew the complicated tattoo on Lindsey's back for a long time because 
Answer: Monica is the tattoo artist.

Problem: How does the sentence end?

Neil asked for Logan's chocolate ice cream milkshake even though 
Answer: Neil is lactose intolerant and shouldn't drink it.

Problem: How does the sentence end?

The skin of William is much darker than Eric, which is because 
Answer:
Eric happens to be white.