Organic Compound?

Question

which organic compound would you most likely need more of: carbohydrate, nucleic acid, lipid, protein

a: dry and brittle hair: my guess protein
b: tired all the time: carbs? proteins?
c: fingernails break and are soft: proteins?
d: cold easily: protein?
e: body growing rapidly: don't know

there can be more than one answer for each of the situations
please tell me if im right thanks

Answer 1

a) protein/lipid

b) carbs

c) protein

d) lipids (insulator)

e) carbs/protein

Answer 2

The first answer may be lipid.
It's the oil in your hair that keeps it supple and not dry.