Which of these is a geometric sequence? A. 3, 15, 75, 375, 1875, ... B. 2, 3, 5, 9, 17, ... C., 2, 3, 4, ... D. 2, 4, 6, 8, 10, ...

It would be A since a geometric sequence is when you get from one term to the next when multiplying by the same number (common ratio) each time. In this case the sequence for A, each number is multiplied by 5 to get the next number in the sequence

~If that makes any sense