The events that lead to genetic drift are
a. always natural disasters
b. random
c. predictable
d. related to human activities

Genetic drift is a predictable event alongside with natural selection, mutation, and migration. In every era of generation, organisms’ genes may be passed on to its species, to further the usable genetic trait while the not-so-used genes are trashed away.

if someone had the list of traits you provided

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.