The step function f(x) is graphed.
What is the value of f(1)?
A.0
B.1
C.2
D.4

The value of f(1) is the y-value when x=1.
From the graph, we see that y=0 when x=1. Thus, the value of f(1) is 0, which is option A.
Let me know if you need any clarifications, thanks!