Find the odd number / letters / word from the given alternative:

The answer is D. Park.

A platform, dock, and bus-stand are all places where people can wait for transportation. A park, on the other hand, is a place where people can go to relax and enjoy nature.

A platform is a raised area at a railway station where passengers wait for trains. A dock is a structure built alongside a body of water for mooring ships and boats. A bus-stand is a place where buses stop to pick up and drop off passengers. A park is an area of land set aside for public recreation, typically having open spaces, gardens, and walking paths.