Intermittent activity means participating by paying attention developing a skill focusing on what you are hearing taking in sounds

None of the options is correct.

INTERMITTENT ACTIVITY means that you perform said activity at irregular intervals, in a sporadic way. On the contrary, the options mentioned require the subject to participate actively. For example, in order to develop a skill it is important to practice a lot. In the same way, if you focus on what you are hearing, you are paying attention which is the opposite to what an intermittent activity is.

participating by paying attention

Explanation:

The word "intermittent" is a term that is commonly used to describe an activity where the physical exertion is taking place. This is a phrase that is used to describe a variety of the training routines that are followed throughout a physical activity. The term "intermittent" also means the stop and start intervals. Because the activity is a start and stop activity, it requires high levels of attention to detail.