What do these words emphasize about Ma?

— ExhibitC

The author describes Ma with words like "sharply" (line 15), "wary" (line 21), and "watched" (line 42).

What do these words emphasize about Ma?
A . She is in bad health.
B . She is a strong, calculating mother.
C . She is indifferent to her children’s decisions.
D . She loves her son but hates her daughter.
E . She is desperate for attention.

Answer: B