B) Organisms tend to produce more number of offspring that can survive.
C) Offspring with better traits that overcome competition are best suited for the environment
D) Variations are inherited from parents to offspring through genes
Explanation
Variation was the one of the main postulates of Darwinism. Darwin recognised two types of variations$-$continuous and discontinuous variations, but he could not explain the inheritance of variations.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.