What is the main organ of the circulatory system

Which of these gives the best indication that a health service is based on pseudoscience?

Match the behavior with the correct physical fitness component.cardiovascular endurance: a. light hand weightsb. running c. lifting weightsd. exercising regularlye. stretchingmuscle strength: a. light hand weightsb. running c. lifting weightsd. exercising regularlye. stretchingmuscle endurance: a. light hand weightsb. running c. lifting weightsd. exercising regularlye. stretchingflexibility: a. light hand weightsb. running c. lifting weightsd. exercising regularlye. stretchingbody composition: a. light hand weightsb. running c. lifting weightsd. exercising regularlye. stretchingonly one applies to each. this is for high school personal fitness and wellness.

__diabetes is mainly treated with insulin injections, which are received several times a day.