Question

question 3
how much do you think your pulse will increase during the two activities?

Explanation:

This question is about predicting pulse increase during activities, which relates to the study of the human body's physiological responses during physical exertion. The subfield of Natural Science, specifically Medicine and Health (or Biology, as it involves the body's systems), is most applicable. However, since it's a prediction of one's own perception, it could also have a component of Psychology (Social Science) in terms of how people estimate such physiological changes. But more directly, understanding pulse and its changes during activity is a topic in Medicine and Health (or Biology) as it pertains to the cardiovascular system and exercise physiology.

Answer:

The question pertains to predicting pulse increase during activities, falling under Natural Science (subfield: Medicine and Health or Biology) as it involves physiological responses to physical exertion (or could also relate to Psychology in Social Science regarding perception of such changes). A typical estimate might be that for moderate activities, the pulse could increase by 30 - 50 beats per minute from a resting rate, but this is subjective and depends on the intensity of the activities.