Which of the following is true about cardio fitness a. cardio activities are also known as aerobic activity b. cardio activities are recommended on a daily basis c. when performing cardio activities your heart rate should be within your target heart rate zone d. all of the above

A. Cardio activities are also known as aerobic activity

Step-by-step explanation:

D. All of the above

Step-by-step explanation:

Cardiac activities, also called aerobic activities are sporting activities that are good for the health of the heart. For example, running, cycling or walking. These activities are recommended by cardiologists and can be done daily except for people who have heart problems. During aerobic activity, you must keep your pace within a safe limit, a target heart rate zone. This is easily marked through specific bracelets and even apps.

answer: idk

step-by-step explanation: sry idk

the correct is answer is a 9-sided polygon!