This is the 3529th most frequent Russian word.
респондентов
"Respondents."
In this sentence, 'респондентов' is used in the accusative plural form to represent the individuals who were surveyed or questioned.
Мы опросили респондентов, чтобы получить их мнение.
We surveyed the respondents to get their opinion.
Here, 'респондентов' is used in the genitive plural form, indicating possession—showing that the answers belonged to the respondents.
Ответы респондентов помогли нам улучшить сервис.
The respondents' answers helped us improve the service.
In this case, the subject is presented in the nominative plural form 'респонденты,' referring to individuals who are surveyed but in the nominative case as the subject of the sentence.