Correct Option: B

indifferent (Adjective) : having or showing no interest; not caring about others
inquisitive (Adjective) : asking too many questions and trying to find out about what other people are doing, etc; curious
insincere (Adjective) : saying or doing something that you do not really mean or believe
insensitive (Adjective) : unsympathetic
insulting (Adjective) : causing or intending to cause somebody to feel offended