What is the first step in changing a health-related behavior? ?

for me i would

1.   break up the project into simpler tasks

2. prioritize the tasks

3. create an action plan

4. create a schedule

5. delegate work

this would be logical sequence, because:

1.   i need to know what the simple tasks are

2. i need to know which ones need to be done in order of importance

3. make a plan to get everything done in the correct order

4. set up the times and days for completion

5. hand out tasks to other to get it all done.

answer(b) keep oxygenated and deoxygenated blood separate;