Correct option is C
In this question following logic is followed-
(2nd – 1)2 = 1st number
169 : 14 → (14 – 1)2 = 132 = 169
289 : 18 → (18 – 1)2 = 172 = 289
Similarly,
? : 16 → (16 – 1)2 = 152 = 225
Therefore, the correct answer is (c).