The correct answer is letter A
Scaffolding refers to a variety of instructional techniques used to move students progressively towards greater understanding, ultimately greater independence in the learning process. A great explanation for the term was given by Margaret Montet "scaffolding" is the assistance (parameters, rules or suggestions) that a teacher gives the student in a learning situation. The technique allows the student to get help only with skills that are new or that are beyond their ability at the moment.