Adance studio is offering classes to improve client’s ballroom dancing skills. select the best technology tool available to provide feedback to the client after an initial visual review of their dancing technique by the instructor.

dance based exercise videogame
heart rate monitor
spreadsheet checklist
video camera analysis

Which is an effective way to prevent bullying and harassment

[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.

How does sending the test results as its written might affect the patient?