Sally has a large yard around her house. How could she use that to live more sustainably?

Sally has a large yard around her house. She could do some to grow her own produce and with her food scraps to avoid the use of chemical fertilizers.

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.