Where is the st segment located between

When you improve the ability of your muscles to repeatedly exert themselves you're improving your

Hepatitis b and hiv/aids are two serious infections that can be transmitted by a. breastfeeding and contact with blood. b. sharing food and sharing drinks. c. transmission by air, water, and shared bodily fluids. d. skin contact, contact with urine, and sharing clothing.

What is one way in which an active listener can confirm understanding of a message?