please help, word bank is below

A researcher wants to know how undergraduate college students at her university feel about federal nancial aid. She obtains a list of 1196 undergraduate college students at her university, selects 500 of them at random, and emails a questionnaire to them. 107 questionnaires are returned. Of these, 71% stated that they believe that the federal student loan program needs to be i completely overhauled. Classify the following groups as the population or the sample for this particular study. If a group does not belong in either category, leave it unplaced. Population Sample Answer Bank all undergraduate college students all undergraduate college students at the researcher's university I: the proportion of all undergraduate college students at the researcher-'5 university who believe that the federal student loan program needs to be ' completely overhauled I the 1196 undergraduate college students whose names were obtained the 107 undergraduate college students who returned the questionnaire | l '1 the 500 undergraduate college students who were randomly chosen 1 the 71% who stated that the federal student loan program needs to be completely overhauled