Fill in the blank with a suitable preposition.
She couldn't feel her hands. Her fingers were numb ________ cold.
The girl’s fingers are numb due to the cold weather. Therefore ‘with’ is the apt answer because ‘with’ is used to denote being in the company of something. In the given context being in the cold causes her fingers to become numb. Thus option C is correct. On the other hand, ‘for’ is used to show to whom something is intended for. Her fingers are not numb ‘for’ the cold, so option A is incorrect. Similarly, ‘off’ is used to denote that something is removed or thrown away, which is also unsuitable here. Thus option D is incorrect. The preposition ‘at’ is used to refer to a place or time. Since ‘cold’ is neither of these option B is incorrect.