What percentage range of moisture is acceptable for drywall ?

(a) 0-8% relative
(b)0-20% relative
(c)0-10% relative
(d)0-5% relative
(e)none of the above

by moisture range, i assume you mean relative weight of water. i don't
know the answer to that. i just got a load of drywall delivered in the
rain. some of the sheets are damp to the point of being fragile, but
other than that it's OK. i'd say if it can be hung without damage,
it's fine.