Select the number from among the given options that can replace the question mark (?) in the following series.
35, 43, 53, 61, 71, ?

Let's find the differences between consecutive terms:
43−35=8

53−43=10

61−53=8

71−61=10

The differences follow an alternating pattern: +8,+10,+8,+10,…
Following this pattern, the next difference must be +8:

71+8=79
Let's double check if 79 is in the options. Yes, Option A is 79.