In the given question, the sentence is divided into three parts I, II, and III. For each part, an alternative statement is also given. You have to determine if a part requires a correction and then mark that as your answer.

To combat a spike in air pollution, / authorities prohibited elder automobiles with / higher emission levels of the roadways.

I. To combating a spike in air pollution,

II. authorities prohibited older automobiles with

III. higher emission levels off the roadways.