Use structure “subject + auxiliary + past participle + by + object”
As per the given above sentence is given in Passive Voice.
The police will be informed by them.

Correct Option: A

Use structure “subject + auxiliary + past participle + by + object”
As per the given above sentence is given in Passive Voice.
The police will be informed by them.
Hence , option A will be correct answer .

We can say that ,
The above given sentence is given in Passive Voice :-
Use structure “auxiliary + past participle”
He was asked a question by Mr. Sen.

Correct Option: C

We can say that ,
The above given sentence is given in Passive Voice :-
Use structure “auxiliary + past participle”
He was asked a question by Mr. Sen.
Therefore , required answer will be option C .

As per the given above sentence is given in Passive Voice.
Use structure “auxiliary + past participle”
Grass is not eaten by a lion, however hungry he may be.

Correct Option: A

As per the given above sentence is given in Passive Voice.
Use structure “auxiliary + past participle”
Grass is not eaten by a lion, however hungry he may be.
Hence , option A will be correct answer .

We can say that ,
Use structure “auxiliary + past participle”
The above given sentence is given in Passive Voice :-
He was seen leaving the house by me.

Correct Option: B

We can say that ,
Use structure “auxiliary + past participle”
The above given sentence is given in Passive Voice :-
He was seen leaving the house by me.
Therefore ,required answer will be option B .

We can say that ,
The above given sentence is given in Passive Voice :-
You are supposed to make tea at eleven O’clock.

Correct Option: C

We can say that ,
The above given sentence is given in Passive Voice :-
You are supposed to make tea at eleven O’clock.
Hence , option C will be correct answer .