What is the grammatical name of "if social man is to be understood historically?.

what did the protagonist say?

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).

apprenticeships are formal, paid, long-term training programs that provide valuable classroom instruction coupled with on-the-job training for skilled, high-paying jobs.

“there are three different methods of direction observation with intervention: parrticipant observation structured observation and field experiments . “ hope this