The injury that includes instability of the knee with pain and swelling is an ACL tear. Thus, the correct option is C.
What is an Injury?
An injury may be defined as a situation of being damaged, hurt, or injured due to various physical processes like road accidents, sudden fall down, during playing, etc.
An ACL tear involves a loud popping sensation in the part of the knee. It also severe pain and instability to move the knee that possesses a rapid swelling.
Hamstring injury or stain is associated with hamstring muscles, while groin strain results from giving more pressure on the muscles of the region of groin and thigh.
Therefore, the injury that includes instability of the knee with pain and swelling is an ACL tear. Thus, the correct option is C.
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