In the following question, sentences are given with a part in bold. The given phrase in bold may or may not contains an error. The options following can replace the incorrect phrase. The correct phrase that is to be replaced will be your answer. If the sentence is correct then select ‘No improvement required’ as your answer.

He was promoted to the rank of major in recognising of his valour during the battle.

The correct option is in recognition of his.

Step-by-step Explanation:

1. Analyze the original sentence:
The given sentence is: "He was promoted to the rank of major in recognising of his valour during the battle."

2. Identify the grammatical error:
The phrase "in recognising of his" uses the participle/gerund form "recognising" incorrectly along with the preposition "of". In English idiom, when expressing an appreciation, reward, or honor given for a specific act or quality, the correct idiomatic phrase is the noun phrase "in recognition of".

3. Evaluate the options:
- with recognising of his: Incorrect preposition and verb form.
- in recognition of his: Correct form. "Recognition" is the appropriate noun, and "in recognition of" is the standard idiomatic expression.
- in recognising to its: Incorrect preposition ("to"), incorrect pronoun ("its" instead of "his"), and wrong verb form.
- on recognition to his: Incorrect prepositions ("on" and "to").
- No improvement required: Incorrect, as the original phrase contains a grammatical error.

4. Conclusion:
Replacing the bold phrase with "in recognition of his" yields the correct sentence: "He was promoted to the rank of major in recognition of his valour during the battle."