The car . . . . . . . . leaking oil.

A. has

B. had

C. were

D. was

Answer: Option D

Solution(By Examveda Team)

'was' and 'were' are in the past tense, but they are used differently.
'Was' is used in the first person singular (I) and the third person singular (he, she, it).
'Were' is used in the second person singular and plural (you, your, yours) and first and third person plural (we, they).