The answer I believe is c.secondary
I would say C, schizophrenia,
because schizophrenia is "a mental disorder that in many ways centers around not recognizing what is part of reality – namely, having psychotic breakdowns." It is not related to anxiety, as anxiety is classified as "neurotic" while schizophrenia is classified as "psychotic".
NATIONAL ems education standards
Take some simple measurements, add a dash of algebra, and you basically have a way to measure an unknown mass.
