Who gave "The struggle for the survival"?

The correct option is B Darwin
Darwin gave survival of fittest on origin of species. He stated that species are in the state of continuous state of struggle for existence and the species which are able to adjust in according to the changing environmental condition during the course of evolution have better chance of existence.

Lamarck was known for theory of inheritance of acquired characters.

Haeckel gave the theory that an organism (ontogeny) expresses all the intermediate forms of its ancestors throughout evolution.

So, the correct answer is option A.