Given: A triangle ABC with sides a,b, and c.
Required: To find out the hypotenuse of the triangle.
Step-by-step explanation: There are several ways to identify the hypotenuse of the triangle.
The hypotenuse is the longest side of a right-angled triangle.
It can also be identified by locating the opposite side of the right angle. The following figure demonstrate the hypotenuse of a right triangle.
Hence we can conclude that in the given triangle ABC, c is the hypotenuse of the triangle.
Final Answer: Option C is correct.