Select the correct Active/Passive form of the given sentence.

He said to his colleague, “Let us take a break for some time for a change.”

He suggested his colleague that they should take a break for some time for a change.

The correct active/passive form of the given sentence is He suggested his colleague that they should take a break for some time for a change.

The sentence is in the simple present tense, which is used to describe an action that happens regularly or now. The active voice of the sentence is formed by putting the subject of the sentence before the verb and removing the word "by." In this case, the subject of the sentence is "He" and the verb is "suggest." So, the active form of the sentence is "He suggested his colleague that they should take a break for some time for a change."

The other options are incorrect because:

• He proposed his colleague to take a break for some time for a change." This is incorrect because the verb "propose" is used to make a formal suggestion, not a casual one.
• He told his colleague to take a break for some time for a change." This is incorrect because the verb "tell" is used to give an order, not a suggestion.
• He suggested his colleague to take a break for some time for a change." This is the active voice form of the sentence.
• His colleague was suggested by him to take a break for some time for a change." This is the passive voice form of the sentence, but it is not the most concise form.