Name two tests of aerobic fitness, one maximal and
one sub-maximal.

Aerobic fitness tests, maximal and  sub-maximal test are described below..

Explanation:

The aerobic capacity is the ability of the heart and lungs to provide the body with oxygen for exercise.The submaximal tests usually involve heart rate measurements which are then extrapolated to estimate performance at maximum effort.Fitness can be measured by the volume of oxygen you can consume while exercising at your maximum capacity. VO2max is the maximum amount of oxygen in milliliters, one can use in one minute per kilogram of body weight. Aerobic fitness is primary for most sports.Submaximal performance testing is a way of estimating either VO2 max or "aerobic fitness" in sports medicine. ... Submaximal tests are used because maximal tests can be dangerous in individuals who are not considered normal healthy subjects and for elite athletes maximal tests would disrupt training load balance.Submaximal: Intensity that elicits between 70% and 85% of the age-predicted maximal heart rate, used on older populations/all populations, it's easy and safe to use.A maximal exercise test is one that is performed with progressively increasing workloads up to limiting fatigue and/or dyspnea caused by exhaustion of the capacity for adaptation of the patient's cardiovascular system.A submaximal all-extremity exercise test to predict maximal oxygen consumption. ... PURPOSE: Submaximal aerobic exercise testing is utilized with a variety of populations to assess fitness level and predict maximal oxygen uptake (VO2peak) when a maximal test is not possible or preferable.

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Bmust be the answer, as technically all organs move, so a is incorrect. all organs are made of different types of cells, so that isn’t a problem, so c is also incorrect. human hearts are very similar to many other animals’ hearts, so d is also incorrect, yet the heart is made of muscle, which is hard to grow in the lab so it would be correct to say b