Question

1. what must always be achieved to ensure high - quality adult cpr compressions?

o chest recoil
o 1 inch depth
o compression rate of 190
o compression rate of 220

Explanation:

High - quality adult CPR compressions require chest recoil to allow the heart to refill with blood between compressions. The depth should be at least 2 inches, and the compression rate should be between 100 - 120 compressions per minute. Options with compression rates of 190, 220 are too fast, and 1 - inch depth is insufficient.

Answer:

Chest recoil