Aperson will be able to perform these types of activities in their target heart rate zone for a long period of time. a. muscular strength b. cardio respiratory endurance c. flexibility d. sitting

Hey there!

It’s not flexibility or sitting because that’s not exercising. It would not be muscular strength because that can’t be maintained for a long time. It’s B. Cardio respiratory endurance. Endurance means that something lasts. A target heart rate zone needs to be held for 20 minutes. Running will help stay at a high enough heart rate zone.

I hope this helps!

Smoking damages the respiratory system by inhalation of a foreign substance, that is absorbed and residue is left behind on our lungs sponge like substance. the gas that is inhaled also increase your blood pressure and dilates your blood vessels. also the process of inhaling and exhaling the smoke it causes irritation to the throat and mouth. smoking can cause lung cancer and other respiratory and circulatory diseases. 

Phallus or pelvis or scroutum