Know the name of the system that retrieves excess tissue fluid (lymph), filters, cleans, and returns it to the blood

Lymphatic System

Explanation:

the lymphatic system is "the network of vessels through which lymph drains from the tissues into the blood."

d. groundwater flows through the subsoil and deposits minerals.

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.