The correct answer is A. Place
Explanation:
In language, roots are the basic parts of words that provide meaning to the word and is used to form multiple words. In the case of the words topographer, topographic, topography and similar the root word is "top" that derives from the Greek word "topos" and means "place", also this is combined with the suffix "-graphy" and similar that means "study" or "writing" considering topography is the field that studies land or places, topographer is the expert that studies land, and topographic is an adjective to describe elements related to topography. Thus, the meaning of the rood -top- is place.
