From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences: ...........I come i...

From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences:
...........I come in, please?

Answer Details

The best word to complete the given sentence is "may". "May" is a polite way of asking for permission to enter a room or space. The use of "might" would suggest uncertainty about the ability to enter, while "should" would imply an obligation to enter and "must" would suggest a requirement to enter.