Help fast plz In the early 1900s, California citrus growers sprayed their trees with cyanide gas to kill scale insects. By 1914, some scale insects were surviving the spraying, and
eventually the whole population showed resistance to cyanide.
Which of the following statements best explains how resistance to cyanide spreadin the scale insect population?
a) Insects with a resistance gene survived the first cyanide sprayings and passed
the gene to their offspring.
b) Insects without a resistance gene underwent mutation upon contact with the
cyanide to acquire resistance,
c) Predators put greater selection pressure on insects with a resistance gene than
on insects without a resistance gene.
d) Parasites infecting the insect population carried the trait from insects with a
resistance gene to insects without a resistance gene.