She lost a big order from a known showroom in case of her own carelessness.

Options

A. She lost a big order
B. her own carelessness
C. in case of
D. from a known showroom

Answer

C

Explanation

The phrase ‘in case’ means ‘as a provision against something happening or being true’. The sentence requires a conjunction which is used to introduce a clause expressing an explanation or reason. ‘Because’ meaning ‘for the reason that, since. should be used instead of .in case.. Hence, option C is the correct answer.