Remember that the Apple Watch is just guessing. Hence, using "It looks like" is more appropriate. Otherwise, a tech illiterate senior might not understand why the Apple is suddenly asking if he/she fell so directly when there is a false positive.
I like Apple's version more.
"Fall detected"
"Sudden motion - Injury suspected".
"Fall detected" --> which is not technically correct. The watch didn't detect a fall. The watch is only seeing signals that suggest you might have fallen.
"Sudden motion - Injury suspected". --> There are probably many data points fed into an algorithm that detects falling so saying one of those factors, "sudden motion" is not accurate. "Injury suspected" is vague. Who did the Watch suspected had an injury? And not every fall results in an injury. The watch shouldn't be suspecting an injury unless it uses its sensors to detect an injury.
I still think Apple's version is the best out of any of the alternatives suggested here. I guess that's why most people here are developers - not HCI/UX people.