The answer is option D
All the provided answers are correct, some of the benefits of first aid are:
Improves the chances of survival: Those trained have the ability to assist an injured or ill person during a variety of emergency situations.
Reduces the risk of permanent injury: First aid treatments such as the Rest, Ice, Compression, Elevation are very helpful for strains, sprains,
contusions, dislocations, or uncomplicated fractures, avoiding in a great percentage permanent injuries.
Reduces the risk of infection: Standard precautions taken by people trained in first-aid are the principle means of ensuring infection control in while performing
first aid on general conditions.