Answer:
The correct option is 1. The given graph is a function.
Explanation:
Vertical line test: According to vertical line test if no vertical line intersects the graph more than once, then the graph represent a function.
From the given graph it is clear that no vertical line intersects the graph more than once. Since the given graph satisfies the vertical line test, therefore the given graph is a function.
Option 1 is correct. Yes, the given graph is the graph of a function.