The answer would be thete are not enough of them
The answer is A. Fossils have been found by the local science club. Since the verb, found, is being done to the subject, fossils, it is in the passive voice. The others are in the active voice since the action is being done by the subject.
Where is the passage I can’t see one :(
“The use of animal fat violated Hindu and Muslim beliefs and cause the native soldiers to revolt. This revolt led to one of the largest massacres of British men and women ever recorded.”-
“An attempt was made to evict these Mahajarins, whereupon the military police were attacked by a crowd of some forty Maharanis and the British officer who intervened was seriously wounded with a spade.”-
“A detachment of Indian troops at Kacha Garhi thereupon fired two or three shots at the Mahajarin for making murderous assault on the British officer. One Mahajarin was killed and one wounded and three arrested.