When a car suddenly stops, the objects in the back seat are thrown forward. This is due to— -:---:--

the law of inertia

the law of action/reaction

the law of force and acceleration

the law of gravitation

Whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.