Which of the following natural processes is likely to hasten organic evolution?

What is artificial selection? Do you think it affects the process of natural selection? How?

What is a significant consequence of geographical isolation?

The initiating force of evolution is

The frequency of a character in a population is found to be increasing when:

Given below are two statements regarding evolution.
Statement-$I$: Natural selection is the establishment of a phenotypic trait in changing environmental conditions.
Statement-$II$: Natural selection encourages those genes or traits that ensure highest degree of adaptive efficiency between population and its environment.
In the light of above statements, choose the most appropriate answer from the options given below.