Carrol is 20 years old and under weight. She has not had a menstrual cycle for the past 6 months. The fact that she has not menstruated indicates she is experiencing

Either Carrol is pregnant, or she's experiencing menopause.

Yes you can experience menopause being 20.

"Menopause starts for most people in their late 40s or early 50s. But in early or premature menopause, the drop in estrogen production and the end of menstrual periods comes much earlier. Premature menopause begins before the age of 40, and can sometimes happen in your 20s."

Is what healthline.com says,

And,

"Early menopause can happen naturally if a woman's ovaries stop making normal levels of certain hormones, particularly the hormone oestrogen. This is sometimes called premature ovarian failure, or primary ovarian insufficiency."

Is what nhs.uk says.

Hope it helps! ^^

the telephone is the answer

i’m   sure probably just geuss and see which one you can get right, i’m pretty sure it is the combination of goods and services