Melanie manages a local store for a national drug store chain, and had received complaints from several customers about rude employees. in order to determine the status of her customer service, shelly hired a team of marketing researchers. the researchers posed as customers shopping in the store, but were actually taking notes and recording the actions of the service staff. the research notes melanie received were a form of data.

Observational data

Explanation:

Observational data is information obtained through observation. An observational research is carried out by just recording the behavior that the researchers see and experience. The researchers should not do anything to change the observed behavior.

In this case, the researchers hired by Melanie behaved like normal clients, they didn't tell anyone about their task and just took notes about what behavior they observed while shopping there.

the answerr would be 1