Final answer:
The backcourt in tennis refers to the baseline area, but the term 'no man's land' is occasionally used to describe the disadvantageous space between the baseline and the service line; option c) is the closest if one must choose.
Step-by-step explanation:
The backcourt in tennis is not officially known by any of the options given in the multiple-choice question. The backcourt generally refers to the area of the court that is towards the baseline, where players often position themselves to rally or defend against opponents' shots. However, the term "no man's land" is colloquially used in tennis to describe the area between the baseline and the service line, which is a tactical disadvantage area to stand during a point as it allows little time to react to balls landing close to the player's position and is also a difficult place to hit attacking shots from.
Hence, the correct answer to the question 'The backcourt in tennis is also known as _________.' could be interpreted as a trick question, and if one must choose from the provided options, the closest is c) No man's land, although this is not a formal tennis term for backcourt.