HELP PLEASE EXPERTS! the question is in the picture

Answer:
B) 6
Step-by-step explanation:÷
The area of a triangle = 1/2 b* h or [tex]\frac{b*h}{2}[/tex]
Line AB = 4
Line AC = 3
Line BC = x
b = 3
since it is at a right angle,
h = 4
[tex]\frac{3*4}{2}[/tex] = 6