HELP ME PLEASE ITS MATH

Answer:
the answer is C because all you need to do is just count how many there are
Step-by-step explanation:
Answer:
D. 5 units
Step-by-step explanation:
Using the pythagorean theorem:
[tex]a^2 + b^2 = c^2\\a = 3\\b=4\\3^2 + 4^2 = c^2\\9 + 16 = c^2\\25 = c^2\\c= 5[/tex]
Here's a picture of what this looks like and a deeper explanation: