Given:
The graph shows the XY plane where x shows the number of T shirts bought and Y shows the number of stickers received.
The plotted points on the graph have the coordinates:

Clearly, we can see the y coordinate is double of x coordinate here, so the equation of graph shown will be : y = 2x
Now we will check the points given in tables in the options if they satisfy this equation or not.
Check option (F),we get:

Which doesnot satisfy the equation y=2x hence, option F is wrong.
Now chcek option G ,

These points clearly satisfy y= 2x, hence,
Option (G) is correct.
Similarly, if we check option (H) and (I) they will not satisfy the equation, Hence , option (G) is only correct.