What is the main function of the reproductive system? to transport substances
O to remove wastes
O to continue the species
O to make hormones

To continue the species

Explanation:

The word reproductive has the word reproduce hidden in it, which means to create something very similar to something else, like how people conceive children to continue the species and their children share their parent's DNA

answer; (b); i believe its indefinite existence of human population in a healthy and prosperous condition;

моля да ми помогне с английски език аз не разбирам

molya da mi pomogne s angliĭski ezik az ne razbiram