P,T,Y refers to the set of points which are collinear and is therefore denoted as option C.
<h3>What are Collinear points?</h3>
This is commonly used in geometry and refers to the set of points which lie on the same straight line and are always close to each other when compared to other points. It is possible for them to appear on different planes only and the value by the triangle from the three points is usually zero.
In the example give, only P,T and Y are the points which lie on the same line while other options have points which lie on different lines thereby making them incorrect.
This is therefore the reason why option C was chosen as the most appropriate choice.
Read more about Collinear points here brainly.com/question/18559402
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