Which of the following is an example of the author's use of ethos in "The Damnation of a Canyon"?

A. "It is often stated that the dam and its reservoir have opened up to the many what was formally restricted to the few, implying in this case that what was once expensive has now been made cheap."
B. "The utter barrenness of the reservoir shoreline recalls by contrast the aspect of things before the dam, when Glen Canyon formed the course of the untamed Colorado."
C. "If Rainbow Bridge is worth seeing at all, then by God it should be easily, readily, immediately available to everybody

Question

Which of the following is an example of the author's use of ethos in "The Damnation of a Canyon"?

 		A.	"It is often stated that the dam and its reservoir have opened up to the many what was formally restricted to the few, implying in this case that what was once expensive has now been made cheap."
 B.	"The utter barrenness of the reservoir shoreline recalls by contrast the aspect of things before the dam, when Glen Canyon formed the course of the untamed Colorado."
 C.	"If Rainbow Bridge is worth seeing at all, then by God it should be easily, readily, immediately available to everybody