Answer:
Option A. is the correct option.
Explanation:
First we will find the equation of a line passing through two points (0, 1) and (3, 0)
Since equation of a line is represented by y = mx + c
where m = slope of the line
c = y - intercept
For slope


So equation becomes as

Since this line passes through (0, 1) so
1 = m(0) + c
c = 1
Now we put the value c = 1 in the equation

Since line in the graph is a solid line (not in dotted) and the colored area is below the line, inequality will be "less than equal to".
And the inequality will be

Therefore Option A. is the answer.