The Pew Research Center surveyed 2,076 American adult cell phone users chosen at random in 2013. The sample percentage of adult cell phone users who access the internet on their phones was 60%. The 95% confidence interval was 58% to 62%. What parameter is this interval attempting to estimate?

A.For American adults who access the internet on their cell phones, only 58% to 62% were confident in using the internet on their phones.

B .The average number of American adult cell phone users who access the internet on their phones in 2013..

C.The percentage of the 2,076 American adult cell phone users who access the internet on their phones in 2013.

D.The percentage of all American adult cell phone users who access the internet on their phones in 2013.