Final answer:
Cold applications such as using an ice pack can help control pain and swelling after an injury.
Step-by-step explanation:
The recommended option for the first 48 hours after an injury to help control pain and swelling is A) Cold applications. Cold therapy, such as applying an ice pack or cold compress to the injured area, can help to reduce inflammation and numb the area, providing pain relief. It also helps to constrict blood vessels and decrease fluid buildup, which can help to minimize swelling.