What biotic factors in the taiga are different from the biotic factors in the rainforest

Which of the following claims does the author support the least

Two critical interventions to turn around the opioid crises are:

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim