Answer:
Option D. The sequence is not arithmetic because the terms do not have a common difference.
Step-by-step explanation:
We are given  points in a graph as:
       x        y     common difference
       1        1  Â
       2        4       4-1=3
       3        9      9-4=5
       4        16      16-9=7
       5        25      25-16=9
Clearly from the set of values that are given in the graph we could observe that the function that is formed using these set of values is:
y=f(n)=n² where n=1,2,3,4,5,.....
Hence, the following sequence is not an arithmetic sequence as the common difference is different.
( Common difference is the difference in the y-value  from it's preceding y-value)
Hence, option: D is the true option.
D. The sequence is not arithmetic because the terms do not have a common difference.
