TASK DEFINITION: In this task, you are given a question containing a blank (_) and two options. You should pick the best option to answer the question. Please answer with "A" or "B".
PROBLEM: The skin that was made using a special ingredient lasted longer than the  replacement, since the _ is real. (A) skin (B) replacement

SOLUTION: A

PROBLEM: Bob liked herbal tea a lot more than adderall because the _ made him feel calm. (A) adderall (B) tea

SOLUTION: B

PROBLEM: It was easier to teach the students to configure the server than the router because the _ was simple. (A) server (B) router

SOLUTION:
A