Several car manufacturers have begun to market gas-and-electric motor

Question

Several car manufacturers have begun to market gas-and-electric motor hybrid cars,  one that  many believe will help to reduce air pollution levels.

A. one that
B. one of which
C. one
D. ones
E. which

u1983 · Answer

The sentence started in a way ..... we just need a direct now modifier to point to/qualify  cars . IMO  E .

akhil1895 · Answer

Here I understood the meaning as One refers to anyone either market gas/electric motor but it should refer to both so use which

lathikashyam · Answer

Several car manufacturers have begun to market gas-and-electric motor hybrid cars,  one that  many believe will help to reduce air pollution levels.

A. one that
B. one of which
C. one
D. ones
 E. which

Solution: we need it to modify subject ‘cars’ which is plural so can’t use ‘one that’

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