The correct option is
A Think
The given word 'ponder' means 'to consider something deeply or thoroughly', 'thinking about something carefully'.From the options, Option A: 'think' best expresses the meaning of the given word. Hence option A is correct.
Option B: 'Evaluate' means 'to determine or set the value or amount of'.
Option C: 'Anticipate' means 'to expect something or foresee it'.
Option D: 'Increase' means 'to make greater in number, size, or quantity'.
These words do not mean the same as the given word, hence options A, B and D are incorrect.