Answer:
- Applied Research
Explanation:
As per the given description, Bob employs 'applied research' methodology of studying motor learning as he conducts the 'basic research' to find the solution of 'why the birds would prefer to hop when moving on the ground instead of walking in a normal alternating pattern' with an aim to use it for developing new techniques or applications('any advantages that can be applied to human movement'). Thus, this implies that Bob uses this applied research methodology to define the 'distinction between two methods of locomotion' and bring effective solutions to improve the particular problems associated with human movement. Therefore, the correct answer is 'applied research.'