If two sets of identical twins get married and each couple has a child could the resulting children be identical?

No

Explanation:

As quoted by Prof. Rodney Scott

"[Two sets of] identical twins will not have identical offspring," says Professor Rodney Scott, head of medical genetics at the University of Newcastle. ... Their children wouldn't inherit identical traits from their parents because of a process called 'genetic recombination'."

answer; i believe that the correct answer is (a) restriction);

teens need 8-10 hours of sleep. it kind of depends on what time you get up. but prob around 10 or 11 p.m. or 11 or 11: 30 p.m.