A prominent fast-food chain has recently declared that it will eliminate high-fructose corn syrup from its tortillas; the question remains whether potential customers will start and purchase food there after the chain's products still contain so many other unhealthy ingredients.
A) whether potential customers will start and purchase food there after the chain's products still contain ->
will start what?? food?? no; will start to purchase must be the construction -> EliminateB) whether potential customers will start to purchase it if the chain's products still contain
-> usage of if products still contain implies conditional, if and still contain can't go together since contain implies it's a fact - EliminateC) whether potential customers will start to purchase food there given that the chain's products still contain
-> Correct use of whether to express doubtful scenario, given used here to present a fact that the products still contain harmful ingredients. D) if potential customers will start and purchase food there if the chain's products had still contained
-> Conditional use of if to express doubt is incorrect -> EliminateE) if potential customers will start and purchase that food there if the chain's products still contain
-> Conditional use of if to express doubt is incorrect -> EliminateAnswer - C