Answer:
Option (C) is correct.
Step-by-step explanation:
A function f : A -> B means every element of A is mapped to a unique element of B, where A and B are non-empty sets.
Now, to check whether a graph is a function or not, there is a test called 'Vertical Line Test'.
In the test, we draw a vertical line passing through the graph. Then:
1. If the line cuts exactly at one point of the graph, then the given graph is a function.
2. If the graph cuts at more than one points, then the graph is not a function as it does not satisfy the definition a function.
Now, in the given graph, if you draw a vertical line on the right side of origin, it will cut at more than one point.
Hence, the graph fails the vertical line test and it is not a function.
So, option (C) is correct.
