1.

1). Only C2). Both A and B3). Both A and C4). Both B and C

Answer»

A person or an incident is backed 'by' SOMEONE and 'with' something. Here the word 'politicians' is mentioned THUS the CORRECT preposition here would be 'by'. Thus the phrase and option A are incorrect.

Option B is correct.

Option C is correct too as the word 'support' is correct here. It has been correctly structured. 

Thus option 4 is the correct ANSWER.



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