Read the following sentence: everywhere you look, people are commuting in gas- guzzling suvs. meanwhile, their backseats are empty - all six of them. what would most naturally come next in this argument? a. a call to action to improve roads and the highway system b. the writer's personal observations about drivers' bad habits c. a proposal that drivers should start carpooling more often d. the definition of a "gas guzzler" in terms of miles per gallon