A total of 750 students responded yes.
As it is given in the tree diagram that is lower there was a total of 450 students who responded yes.
Now, in upper there were a total of 400 students of which 100 students responded no which means (400-100), students responded yes i.e., a total of 300 students responded yes.
So, upper+lower responses of yes will be total responses of students as yes.
So, a total of 300+450=750 students responded yes.
Hence, 750 students responded yes.
Therefore, option C is the correct answer.
1 : to say something in return : make an answer respond to criticism. 2a : to react in response responded to a call for help. b : to show favorable reaction respond to surgery. 3 : to be answerable respond in damages.
Respond is defined as to answer or reply or to act in return. An example of to respond is to answer a question in class. An example of to respond is for an ambulance to rush to the scene of an accident after a phone call requesting their service. (intransitive) To say something in return; to answer; to reply.
Learn more about responses, refer to:
https://brainly.com/question/21238487
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