The process of natural selection was named as survival of the fittest by . . . . . . .

Evolution is a process or the result of a process. Explain this statement.

According to $Darwin$,fitness refers to .........

Statement-$I$: The fitness according to Darwin,refers ultimately and only to reproductive fitness.
Statement-$II$: Those who are better fit in the environment leave less progeny than others.

According to $Darwin$,fitness refers to .....

Given below are the two statements.
Statement $I$: Directional isolation favours the intermediate forms and eliminates both phenotypic extremes.
Statement $II$: In directional isolation,more individuals acquire a value other than the mean character value.
In the light of the above statements,choose the correct answer from the options given below: