The answer is D.
menstrual irregularity
<span>The correct answer is D. a viral infection. Viruses are immune to antibiotics and and can't be killed easily, so you treat the symptoms and the body establishes immunity and defeats the weakened virus. That's why once you get things like the measles once, you can never get them again after in your life.</span>
I will have to go with D because one pound is 3500 so if you reduce 3500 you can lose a pound