girl's periods get more regular, cramps are more likely.They can be mildly annoying to extremely painful, and they usually last for a few days. Cramps may worry some girls at first if they don't know they're often a normal part of having a monthly period.<span>
</span>
The answer is C. The name itself means not able to be transmitted
I think this is ovulation. Not a 100% sure
The answer is D, since you are keeping your back straight. Your back will curve forward with poor posture.