Answer:
The correct option is b) all genes of all of the individuals in a specific population
Step-by-step explanation:
In ecological studies, a gene pool can be described as all the genes which organisms of a specific population possess. The higher the number of genes in the gene pool, the higher will the genetic diversity of the population. The more the genetic diversity, the more stable the population will be in the ecosystem. Hence, option B is correct.
Other options, like option D, is not correct because a gene pool refers to all the genes of organisms of a population, not a single individual.