A- Abstaining from any sexual activity 
        
             
        
        
        
I believe it would be C. Cracking a rib. 
Because 
- CPR doesn't involve the arms
- Headaches can happen at any age 
- Not finding a pulse can happen with any person
- Cracking a rib would make the most sense to me due to that bone mass or density decreases as a person ages, the bones lose calcium and minerals causing them to deteriorate and become more brittle, which may result in them becoming easily breakable.
This is only my guess though, so don't take my word for it. 
Hope it helps at least a little. (:
        
             
        
        
        
Answer:
The in-line system allows for laying, collec- tion, and grading to take place at one facility. The off-line system transports the eggs out of the laying house directly to an egg cooling room and then transported to an egg processing facility.
Explanation:
 
        
             
        
        
        
Answer:
The most important emotional aspect is that exercising is a very healthy outlet for any anger, sadness etc. that you may be feeling. The most important  health benefit of exercising is that It can help with depression and can help prevent or improve many health conditions whether those might be genetic or because of lifestyle choices. 
Explanation:
this is only my opinion. this is not what everyone else thinks.