Which of the following terms has a meaning related to "medium walking speed"?

The term "Andante" specifically indicates a moderately slow tempo, typically associated with a "walking" pace. It is derived from the Italian word "andare," which means "to go" or "to walk." This term is often used in musical notation to instruct performers to play at a tempo that is comfortable and steady, much like a leisurely stroll. The common perception of "Andante" aligns with the characteristic of medium walking speed, making it the most suitable choice for this question.

Understanding the context of tempo markings enhances one's ability to interpret musical scores. While "Allegretto" denotes a slightly faster tempo than Andante, "Andantino" can sometimes suggest a tempo that is slightly faster than Andante but lacks the same clarity in speed. Meanwhile, "Allegro" indicates a fast and lively tempo, which is far removed from the idea of a medium walking speed. Therefore, "Andante" remains the best choice here, as it most directly relates to the concept of moving at a comfortable, moderate pace.