Carrots are known to be one of the best sources of naturally occurring vitamin A. However, although farmers in Canada and the United States report increasing demand for carrots over the last decade, the number of people diagnosed with vitamin A deficiency in these countries has also increased in that time.
Your task
Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.
Common trap
Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.
Winning move
Predict what a right answer must do, then test each choice against the conclusion-evidence gap.