87.
The answer is: C
Explanation
The correct option is C: Both mental and physical torture.
According to Section 498A of the Indian Penal Code, cruelty means any wilful conduct which is of such a nature as is likely to drive the woman to commit suicide or to cause grave injury or danger to life, limb or health (whether mental or physical) of the woman; or harassment of the woman where such harassment is with a view to coercing her or any person related to her to meet any unlawful demand for any property or valuable security or is on account of failure by her or any person related to her to meet such demand. Therefore, cruelty includes both mental and physical torture, as well as harassment for dowry.
Option A is incorrect, as demand of dowry is not the only form of cruelty.
Option B is incorrect, as physical torture is not the only form of cruelty.
Option D is incorrect, as none of the above does not match the definition of cruelty under Section 498A.