B. A baby is delivered before the 37th week of pregnancy.
A premature birth is a birth that takes place more than three weeks before the baby's estimated due date. In other words, a premature birth is one that occurs before the start of the 37th week of pregnancy. Premature babies, especially those born very early, often have complicated medical problems.
Answer:
For this one It's a bit complicated but If i had To take a Assumption i would assume B.
Explanation:
After I searching up a few Things for More information on the topic It only Left Me With B.
Answer:
Because they can teach them to move up in that level of skill
Explanation:
If they have only one level of skill, they need people who have already finished that level to teach them to move higher.
I really don't know the answer to that
Transporting nutrients through diffusion