The best and most correct answer among the choices provided by the question is the first choice. The main complaint is that it is not that harsh enough. I hope my answer has come to your help. God bless and have a nice day ahead! Feel free to ask more.
Answer: Scaffolding
Explanation: Scaffolding can be simply defined as an instructional method of teaching where an instructor guides his or her students through a step required to complete a task and as they become efficient, he or she begins to withdraw his influence or involement in the guidance process and only give assistance to them if they really need it.
Mr Reeese guided his students through a concept lesson before withdrawing his involement and gave them a challenging task, he monitored and constantly drop hints to help the new students connect prior learning to the new concept.
Mr Reeese was providing Scaffolding.