Struggle To Survive

Struggle for existence and survival of fittest are related to :

Struggle for existence and survival of the fittest theories were given by :

Struggle for existence and survival of the fittest theories were given by :

Struggle for existence was explained by

When darwin spoke of the struggle for existence and survival of the fittest in the nature he was convinced that

Assertion (A): Natural selection is the phenomenon by which the nature selects those species which possess survival advantage over the other species. Reason (R): According to theory of natural selection, there is struggle of existence within the species of a population for the environmental resources and their struggle leads to survival of certain organisms and elimination of the less competent species. a) Both A and R are true and R is the correct explanation of A. b) Both A and R are true but R is NOT the correct explanation of A. c) A is true but R is false. d) A is false and R is true.

Given : 1 = Natural selection , 2 = Variations and their inheritance , 3 = Survival of the fittest , 4 = struggle for existence According the Darwinism, which of the following represents the correct squence of events in the origin of new species ?