Answer;
It can be thrown
Explanation;
The 5 Types of PFDs are:
i. Wearable Offshore life jacket
ii Wearable Ner-shore vest
iii Wearable Flotation aid
iv. Throwable device
v. Special-use device
-Type IV PFD refers to the 4th level of the United States Coast Guard's (USCG) classification for personal flotation devices.
-They are carried on boats as a device that can be thrown to a drowning person.
-They are are also known as a throwable flotation device or Type 4 PFD.