Natural selection can be defined as the process by which organism adapt the better environment.
The best suited organism tend to survive by reproducing offspring. This process favors the organism that is selected by natural and the organism that do not survive in the changing environment dies.
Hence, the correct answer is option D
answer'(basidium)the spore--bearing structure of a basidiomycete is called a basidiocarp; ///
answer; /// i believe that the correct answer is ( monophasic ); ethinyl estradiol- ethynodiol diacetate is a monophasic oral contraceptive agent; ///