Answer:
<em>preparation/determination</em>
Explanation:
People have made a willingness to make a difference in the preparation / determination process.
This is kind of a stage of research: individuals are now making small changes towards cessation.
We try to collect data about what they need to do to change their behavior (sometimes by reading information that could better their lives).
B. Red blood cells contain a protein that binds with oxygen.
The least reliable source of safety information is celebrity athelte