Osmoregulatory -help me out!

Question

Which of the following activities would initiate an osmoregulatory adjustment brought about primarily through the renin-angiotensin-aldosterone system?

A. spending several hours mowing the lawn on a hot day

B. eating a bag of potato chips

C. eating a pizza with green olives and pepperoni

D. drinking several glasses of water

E. not drinking any fluids for a day or two

Answer 1

I would say D and E

Answer 2

Either A or E.  The system regulates the water supply in the body so a lack of water (sweating or lack of drinking) would trigger the system to withhold fluids (pee less) and to withhold salt which causes the body to also withhold water (where salt goes, water follows).