An animal cell has no cell wall so it would be a plant cell
The purpose of the plasma membrane is to keep certain things and things out. So the correct answer to this questions is D, encloses specific structures.
Science can answer only questions about the natural world.
The best answer is :
It is designed to be thrown to someone in trouble.
Type IV PFD refers to the fourth<span> level of U.S.</span><span> Coast Guard's (USCG) classification </span>for private<span> flotation devices. </span>sort<span> IV PFDs are </span>carried<span> on boats as </span>a tool which will<span> be thrown to a drowning person. S</span>ort<span> 4 PFDs </span>also is referred to as<span> a throwable </span>float<span> or </span>sort four<span> PFD.</span>
