A 53-year-old man suddenly collapses and becomes unresponsive. You Witness him collapse and are the first rescuer to arrive at the scene. You find him lying motionless on the floor.
Which is the first action you should take in this situation?

a) Check his pulse
b) Start high-quality CPR
c) Start providing rescue breaths
d) Shout for nearby help

D-A-C-B

Explanation:

In that order to save this mans life.

doctors i believe if i'm wrong sorry

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: