The correct answer is option 4. Key Points Reading the given sentence and the options it can be inferred that the sentence is given is direct speech and we have to convert it into indirect speech. In the given sentence it is written "Let us make a united protest" from which it can be inferred that the sentence is imperative. If the sentence starts with ‘let’ denoting proposal or suggestions, it is changed into indirect speech in the following ways. Change the reporting verb: - “say, say, and said” into the verb — propose/suggest. Use the preposition ‘to’ after the verb. Use the conjunction ‘that’ removing the inverted “........”. "Let Us" will be replaced by– "We/they". Use the verb - should + V1(Plural form) after the subject. Following the above steps, option 1 is wrong because "suggested with" is written and the modal verb "must" is used. Option 2 is wrong because "said to" is written. It should be written as "suggested to" according to the rules. Option 3 is wrong because the word "let" is used in indirect speech. The correct sentence: Then one of the farmers suggested to the people that they should make a united protest against the policies of the government.