The correct option is B Square
Say: Let’s read the question.
Ask:
∙ How many sides does the clock have?
Ans: 4
∙ How many vertices does it have?
Ans: 4
∙ What other detail is mentioned?
Ans: The vertices are L-shaped, and the 4 sides are of the same length.
∙ Which shape has all these properties?
Ans: Square
∙ So, what is the shape of the clock?
Ans: Square
Hence, Option C is correct.