TASK DEFINITION: In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").
PROBLEM: _____ tide is a stage in the tide cycle process that surfers like the best (A) low (B) mud (C) high (D) earthy

SOLUTION: C

PROBLEM: You can find ferrous metals in (A) Grass (B) Vehicle scraps (C) Wood (D) Glass

SOLUTION: B

PROBLEM: Children are more likely to get smallpox if (A) their parents base their medical decisions on advice from has-been adult entertainers (B) they undergo vaccination at an early age (C) they're vaccinated when they're young (D) their parents understand basic science

SOLUTION:
A