I would also have to say, travel and tourism. I don't think too many young children would be interested in agriculture, industry, or the cost at the amusement parks, or the weather patterns in Florida. Hopefully this helps.
The sentence supports the main idea of C. travel and tourism in Florida, as it mentions families visiting Walt Disney World, a popular tourist destination. It emphasizes the significance of tourism in Florida. The other options do not relate to the sentence's focus on travel and tourism.
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