What is the tempo marking for a fairly fast pace, slightly slower than allegro?

The correct choice signifies the tempo marking for a pace that is fairly fast, yet somewhat slower than allegro. Allegretto is an appropriate term used in music to describe a tempo that is moderately fast, often characterized by a lively and cheerful quality. Specifically, it is generally understood to have a tempo that ranges from about 98 to 109 beats per minute, placing it just below the slightly faster allegro, which is around 120 to 168 beats per minute.

In contrast, adagio indicates a slow tempo, which does not fit the description of being "fairly fast." Accelerando refers to a gradual increase in speed rather than a specific tempo marking. Andante, meaning a moderate walking pace, is also slower than allegretto and thus does not align with the requirement for a tempo slightly slower than allegro. Therefore, allegretto accurately reflects the desired tempo marking in this context.