From the list of words or group of wordslettered A to D, choose the one that is ...

The question is asking you to choose the word that is the opposite in meaning to the underlined word and can correctly fill in the blank space in the sentence. In the sentence, the pilot is saying that taking off from the airport is easier than something else. You need to choose the word that means the opposite of "take off" and can fit in the blank space in the sentence. The options are A to D.

Option A is "land", which means to bring an aircraft down to the ground. It is the opposite of "take off". Option B is "come down", which means to move from a higher position to a lower one. It doesn't fit in the blank space in the sentence and is not the opposite of "take off". Option C is "alight", which means to get off a vehicle. It doesn't fit in the blank space in the sentence and is not the opposite of "take off". Option D is "drop", which means to fall or let something fall. It doesn't fit in the blank space in the sentence and is not the opposite of "take off".

Therefore, the correct answer is option A, "land" because it means the opposite of "take off" and can correctly fill in the blank space in the sentence.