Answer:
D
Explanation:
Comment
The rule is any two sides of a triangle must be bigger than the third side. The two sides cannot add to exactly the third side.
A won't work. 12 + 7 = 19 which is less than 23
B won't work 7 + 2 is less than 10
C won't work 8 + 3 is equal to 11. The two little legs will just sit on top of the 11.
D is the answer.