Answer:
The correct answer is b. gene pool
Step-by-step explanation:
Gene pool is the total number of genes and their alleles present in the members of a population. It gives information about the diversity of genes any population carry with them. Higher gene pool in any population means that the population is having higher diversity.
A higher gene pool increases the survival fitness of any population in nature. Gene pool includes both dominant and recessive alleles of all genes that can be passed in next generation.
Therefore, the total collection of alleles in a population at any one time makes up that population's gene pool.