Fill in the blanks with the most appropriate option:-

I promise that our positions will be ___________.

reserved

The most appropriate option to fill in the blanks is reserved.

The sentence "I promise that our positions will be reserved." means that our positions will be held for us and will not be given to anyone else. This is a promise that is often made in situations where there is limited space, such as in a theater or on a plane.

The other options are not appropriate because they do not convey the same meaning.

• Reserves are a stockpile of resources that can be used in case of an emergency. This does not make sense in the context of the sentence, as the positions are not resources that can be used in an emergency.
• Reverse means to change the direction of something. This does not make sense in the context of the sentence, as the positions are not being changed in any way.
• Reserve can mean to keep something for future use. This is similar to the meaning of "reserved", but it is not the most appropriate word to use in this context.