Teachers ask many questions during the course of
instruction, with some teachers asking as many as 300
to 400 questions a day. Questions are generally asked
for one of two purposes: to maintain student attention or
to collect information about students’ current
understanding. Questions asked to maintain attention
are often short ones framed during teaching that require
factual responses by a single student. ---- In addition,
responses by multiple students are often solicited, and
the responses form the basis for the teacher’s
judgement about students’ understanding and serve as
a springboard for further discussion.


Which of the following alternatives best completes
the given paragraph?