What is the ratio of chest compressions and rescue breaths during child cpr when there are multiple rescuers?
a.15: 2
b.20: 2
c.30: 2
d.30: 3

When you aggregate your data, you need to remember a. you'll use this data to parents understand your work. b. everyone should end up looking similar in their development. c. you're looking at the whole group rather than each individual. d. the big picture represents your instructional practices only.