Which type of selection leads to increased phenotypic and genetic variation? directional selection disruptive selection stabilizing selection species selection

The answer is disruptive selection. In case of stabilizing selection the nature favors the selection of average phenotype, and in case of directional selection also nature favors the selection of single phenotype. When it comes to disruptive selection, both the extreme values of a trait are favored  leading to increased phenotypic and genotypic variations.

your answer should be c) enjoy!

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)