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").

Using mirrors to focus collected light from heavenly bodies allows (A) detailed observation (B) foregone conclusions (C) radiation experiments (D) celestial music
A

A lone fox is searching for its next meal in a meadow that used to be bountiful with food. This season, though, rabbits have all been eaten up and the field is dry and barren. The fox may (A) fly (B) speak (C) starve (D) float
C

If you're in the North Pole the North Star may be visible when? (A) a weed (B) two months (C) a day (D) all year round

D