Chromosomes are derived from . A.
Centrioles
B.
Chromatin
C.
Spindle fibers
D.
Nuclear membrane

Major sources of stress, such as a death or divorce, problems in family relationships, job loss, school, and substance abuse, can trigger or aggravate some mental disorders in some people. but not everyone who goes through those things develops a mental illness

Ithink it’s d. that should be correct.