Idon't understand roots and stuff : p i'm dumb meh

It is 5 units.

Step-by-step explanation:

We see in the picture that we can create a right triangle where we do a^2+b^2=c^2, or in other words, the b unit is 4 units to the right, and up three, and 4 and three are a and b...

confusing/bad explanation, but 4^2+3^2=c^2

25=c^2

c=5

The answer would be B)

Hope this helped

Please give me Brainliest