Question

what is considered a vigorous physical activity?
o dancing
o surfing
o playing doubles tennis
o chopping wood

Explanation:

Chopping wood requires significant physical effort, engaging multiple muscle - groups and increasing heart rate substantially, which is characteristic of vigorous physical activity. Dancing can vary in intensity, surfing and playing doubles tennis also have moderate - intensity levels in many cases, but chopping wood is more consistently vigorous.

Answer:

chopping wood