A troop leader recorded whether the members of two troops prefer hiking or swimming. The troop leader plans to create a two-way table to display the results. Which variables can the troop leader use as the row and column headings of the table?

A two-way table organizes counts using two categorical variables. Here, the categories are troop number (the two troops) and activity preference (hiking or swimming); the table entries can then show how many members fall into each combination. Therefore, the correct choice is troop number and activity preference.

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