To find out how many people prefer hiking but not in the mountains, we need to look at the preferences for hiking at the Seaside and Island destinations.
From the table:
- Hiking at the Seaside: 20
- Hiking at the Island: 12
Now, we add these two values together:
20 (Seaside) + 12 (Island) = 32
So, the number of people who prefer hiking but not in the mountains is 32.