Doug rephrases the instructions his dad gives him to make sure he understands what was intended. which of the characteristics of active listening is this an example of?

reflective listening

empathizing

clarifying

encouraging

Which of the following identifies a main culprit for america’s increasing weight gain

[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine.what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.

The only part of the body that should touch the ball when setting in volleyball