Complete the sentence to maintain parallel structure.
“He is committed to improving efficiency, reducing errors, and ______.”

Correct option is B

The correct option is (b).

• Explanation: The sentence contains a parallel series after “committed to”: “improving efficiency, reducing errors, and ______”.
• The first two expressions are in gerund form: “improving” and “reducing”.
• Therefore, the third item must also be in gerund form, that is, “developing teamwork”.
• This keeps the sentence balanced and grammatically parallel.

Grammar Rule involved (English/ Hindi):
• In parallel structure, words or phrases in a series must be in the same grammatical form.
• यदि एक शृंखला में पहले दो पद gerund form में हों, तो तीसरा भी gerund form में होना चाहिए।

Meanings of other options:
• to develop teamwork – infinitive form, breaks parallelism
• teamwork development – noun phrase, not parallel with gerunds
• the development of teamwork – noun phrase, also not parallel

So the correct answer is (b)