As we __________ life we gain experiences of various kinds.
Step 1: The sentence already reads naturally: "As we move through life we gain experiences of various kinds."
Step 2: Let's test the alternatives:
- (a) "move towards life" → awkward and illogical.
- (b) "move ahead of life" → incorrect meaning, as no one can move ahead of life.
- (c) “move into life” → does not capture the continuous nature of gaining experiences.
- (d) No correction required → the existing phrase is correct.
Step 3: Hence, option (d) is the right choice. \[ \boxed{\text{No correction required}} \]
Since one option claims no correction is needed, test this by first identifying what preposition idiomatically pairs with progressing through the course of life, then check whether any listed alternative genuinely improves on that.
Since none of the three replacement options describes the continuous, ongoing sense correctly, the original sentence needs no change.
Hence, the correct answer is No correction required.