In the following question, select the most appropriate option which should replace the underlined word/phrase in the sentence to make it grammatically correct. If the sentence is correct as it is given and no correction is required, mark the option 'No change required' as your answer.
A herd of cattle were allowed to graze in the cemetery
1
A herd of cattle was allowed
2
A herd of cattle are allowed
3
A herd of cattle have been allowed
4
No change required