Which of the following serve as antibodies?

creative diagnostics is a professional biological commercial company,specializing inassisting clients with t cell differentiationstudies.

from the original order (top to bottom) the new order will go

1 (founder)

4 (hawk)

2 (mutate)

3 (next generation)

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".