Answer:
The correct option is D.
Explanation:
The given statement is "Stars have ten vertices".
If a complete statement has two sub statements p and q, then the conditional statement is "If p, then q", where p is a hypothesis and q is a conclusion.
In the given statement,
p = A figure is a star.
q = It has ten vertices
So, the conditional statement of the given statement is
If a figure is a star, then it has ten vertices.
Therefore the correct option is D.