dude...
u need help man...
and sdn is not a tutoring center for high-school peoples.
If you can't figure out the answer from V=IR, I don't know what to tell u. maybe the sciences is not for u.
Resistance means something that stops/prevents. So when you increase resistance, u stop current from going thru.
Think of a river, where water is current. If you keep putting logs (resistance) in one part of the river (and so build a damn), less water (current) can get through. So current decreases. V=IR.
mmz6