81. David Tall conducted a study to investigate 16 year old students’ concept image andconcept definition. The students were asked to draw the tangent to the following graphat the origin. Some students did not cope with the task and asserted that “…because thetangent should touch the line at one specific point but this tangent would touch itconstantly.”Which of the following best describes the cause of the students’ answer?
(A)Almost always the concept definition will be evoked by students when solvingproblems.
(B)Almost always the concept image will be evoked by students when solvingproblems.
(C)The concept definition includes a form of words used to specify the concept,however, the students were asked to draw a tangent in this case.
(D)The concept image includes a form of words used to specify the concept, however,the students were asked to draw a tangent in this case.