If anyone can answer this?

Your the one who should answer it because it's about the physical activities you do. Brisk walking, running, jogging or jogging in place, burpees, bear crawls, swimming, water aerobics, and cycling/bicycling are all cardiovascular exercises. Squats, push-ups, planks, and biceps curl are all example of muscular strength exercises. Forward lunges, side lunges, cross-over, standing quad stretch, seat straddle lotus, seat side straddle, seat stretch, and knees to chest are examples of flexibility exercises.

number of electrons for neutral cl

the answer is b, have negligible mass