In the following question, there is a sentence which is divided into four parts. Choose the fragment that carries an error (if any). Ignore punctuation errors if any.
In a sense, we are being pushed back / to a 1984-like scenario / when scare-mongering / became the base for vote-gathering.
became the base for vote-gathering.
The 4th section carries the incorrect idiom ‘base for vote-gathering.’ It should be corrected to 'basis for vote gathering'.