D. Ma Baxter is critical and detached. I think that's the answer.
The false statement about the uncountable nouns among the choices is letter A which is "Uncountable nouns do not typically take a regular plural form, except in special circumstances". The Uncountable nouns is used with singular verb and usually don't have plural form.
B because she never trying to help juilets decisions but she does care at the end when juliet faked suicide
The answer is By showing how much Henry's mother dislikes the idea of her son enlisting and the way in which she responds to him once he has, the novel establishes that older, more experienced, more knowledgeable people do not share Henry's idealistic notions about war.