Abigail wants to get better at baseball. in order to do this, she has created a list of skills she will need to improve. which skill should get the most of her attention in order for her to excel at baseball?
agility
balance
power or speed

Explain one privacy regulations that you will need to consider when working with patients’ medical records.

Iwill mark you brainlest if you answer this question

[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.