What are some ways you could implement the principle of caveat emptor in shopping for…? (fair trade, question the seller, etc.)
! : )

a is the answer because it just is

answer; the correct answer to the above statement is to increase the production of milk in a herd of milk cows, the highest producing cows were chosen as the mother;

conformal maps greatly distort _sizes_ of continents in higher latitudes.

the answer is sizes.