Correct Answer: Sensitive

Solution : The correct choice is the second option .

A callous person is someone who lacks sensitivity towards others. A sensitive person is someone who is empathetic, attentive, and cares for the feelings of others, making it an antonym for "callous".

The meanings of the other options are as follows:

• Emotional means being influenced by emotions or feelings.
• Analytical means the ability to examine, analyse, and solve a problem.
• Senile means a reduction in cognitive abilities.

Therefore, the correct answer is sensitive.