It's the six of your fist and when your body grows so does it
        
             
        
        
        
B. The air you breathe. 
Because the rest of the choices are not environmental factors. Gang activity, and access to jobs and education are not environmental because environment are things about the world. 
        
             
        
        
        
I would say a because he ran too much but that would be just me I think he hurt his knee from running too much more exercise but probably just aggravate his condition I could be wrong but this is what I think
        
             
        
        
        
Answer:
6 Steps Of Decision Making (Bike Helmet)
Explanation:
step 1: Identify the decision. 
Step 2: Gather relevant information.
Step 3: Identify the alternatives.
Step 4: Weigh the evidence.
Step 5: Choose among alternatives.
Step 6: Take action.
Now, Apply this to buying a Bike Helmet.
step 1: Identify the decision- Identify the decision by looking at your choices. 
step 2: Gather Relevant Information- What do I want the helmet to look like? Is there a specific type of helmet I need? Are the helmets resizable? ect. 
step 3: Gather Information- Find out information on each of the helmets to choose from. 
step 4: Weigh the evidence- Out of the given options, what helmet will suit my specific needs and style? 
step 5: Choose among alternatives- This one looks better but will it protect my head? 
step 6: Choose- chose the helmet based on the information from each helmet and decide which one I need.