Choose the correct phrase from the given option and make a conditional sentence. If he _____quietly, they will not hear him. 

The correct answer is "Option 4" i.e. 'talks'.

 Key Points

• This is another example of a real conditional phrase, where the result depends on a condition
• In English, these are used to talk about things which are generally true or for future events.
• For example: "If you heat ice, it melts."
• The correct word 'talks' (बात करता है) is a simple present form of the verb 'talk' used to denote ongoing actions or habit.
• For example: "He talks in his sleep."

Therefore, the correct answer is - Option 4 "talks".

 Additional Information

• 'Talk' is incorrect because it is the base form of the verb and doesn't fit with the sentence structure.
• 'Will talk' is incorrect as it implies future actions which is not suitable here.
• 'Talked' is incorrect as it's in past tense and doesn't fit in this sentence.