Im not so surce but i bieleve that it is C.
An EPA or Environmental Protection Agency registration number
The correct answer of the given question above would be HYPEREXTENSIBLE JOINTS. The musculoskeletal physical exam findings that you would expect to find on the 3-year-old child with Down Syndrome who is in the cardiac ICU of Shadow General Hospital following open heart surgery is HYPEREXTENSIBLE JOINTS. Hope this answer helps.
