is this sentence correct, find the best choice?This door to remain unlocked when occupied.

-1-is correct.
-2-this door to remain unlocked while open.
3-this office must have the door at all the time.
4-this door to remain unlocked while open.
my answer is correct
thanks for help

That is not a correct sentence. It's missing a main verb.

sorry the other choice is

This door to remain unlocked when office occupied.
it's more make seance to me bc of office.

Based on the options you provided, the correct choice is option 2: "This door to remain unlocked while open."

To determine the correct choice, you can analyze the sentence and understand what it is trying to convey. In this case, it seems like the sentence is discussing a specific door and its status when occupied or open.

Option 1 is incorrect because it is missing a verb. The sentence should either say "This door is to remain unlocked when occupied" or "This door remains unlocked when occupied."

Option 3 is also incorrect because it is not clear what "office" is being referred to or how it relates to the original sentence.

Option 4 is the correct choice because it accurately conveys the intention of the sentence. It states that the door should remain unlocked only when it is open.

It's great that you arrived at the correct choice and understood the reasoning behind it. If you have any more questions, feel free to ask!