Select the number from among the given options that can replace the question mark (?) in the following series.
248, 257, 250, 259, 252, ?

Let's look at the alternating sequence terms:
Series 1 (odd positions): 248,250,252… (increasing by +2)

Series 2 (even positions): 257,259,?… (increasing by +2)

The missing term is the next number in Series 2:

259+2=261