Algebra-1

To determine which sequence is an arithmetic sequence, we need to check if the difference between consecutive terms is constant. An arithmetic sequence has a constant difference between each term.

Let's analyze each sequence:

A. 

Calculate the ratios between consecutive terms (this sequence seems geometric):

The ratios are consistently 2. This sequence is geometric, not arithmetic.

B. 

Calculate the differences between consecutive terms:

3 - 1 = 2

6 - 3 = 3

10 - 6 = 4

The differences are 2, 3, and 4, which are not consistent. This sequence is not arithmetic.

C.