Answer:
The correct answer is (a)
Step-by-step explanation:
Selective attention is a psychological term that refers to the ability to focus on one task and filter out all other irrelevant sensory information.
Clay displays a greater level of selective attention, because he's easily able to tune out the sound of the crowd and focus only on the game. On the other hand, Bruce has a lower level of selective attention, because he can't discriminate what he should be focusing his attention on, and it's often distracted by his opponents and the crowd.
Selective attention can be increased and developed, usually by attaining greater skill on whatever task one is focusing on.