Artificial selection to obtain cows yielding higher milk output represents

Options

A. stabilising selection as it stabilises this character in the population
B. directional as it pushes the mean of the character in one direction
C. disruptive as it splits the polulation into two one yielding higher output and the other lower output
D. stabilishing followed by disruptive as stablises the polutaltion of produce higher yielding cows

Answer

B

Explanation

The directional selection leads to change in the phenotypic character of poplulation in one directiion .In the case of artificial selection , it one direction .In the case of artifical selection .It is intentionally done to increase the milk production so directional selection operates