The correct option is B I- A, II- B, III- C, IV- D
Lamarckism (or Lamarckian inheritance) is the idea that an organism can pass on characteristics that it acquired during its lifetime to its offspring (also known as heritability of acquired characteristics or soft inheritance).
Darwin and the HMS Beagle were in Galapagos during the months of September and October of 1835, and during this time Darwin had the opportunity to explore a handful of islands, collecting Galapagos species for use in his research back home.
An Essay on the Principle of Population was given by Thomas Robert Malthus.
In 1859, Charles Darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. He defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved". Thus, option B is correct and other options are wrong.
Therefore, the correct answer is option B.