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").

Humming birds may help the growth of (A) cars (B) buildings (C) ants (D) tulips
D

Obstacles that might impede a dune are (A) God (B) emotions (C) cacti (D) cancers
C

if an object undergoes chemical change then that object will have new chemical what? (A) warmth (B) temperature (C) appearance (D) attributes

D