Your answer is going to be D
New, inheritable characteristics can result from the recombination of genes during meiosis and <span>mutations in the genes found in sex cells. The correct option among all the options that are given in the question is the first option. I hope that this is the answer that has actually come to your desired help.</span>
C) Is the correct answer I believe, unless you want to flush the chemicals down the sink and then have a reaction with them the next time you go swimming in a lake and find them there.
D) laboratory experiments because every experiment needs a control and a variable.