A colleague needs to collect descriptive data about his customer's attitudes. He has not done this type of research before. What research approach would you recommend to best suit this research project?

A survey

Explanation:

The best approach for this research would be a survey, a survey is a research method used in the collection of data from research subjects, this can be done with the aid of a well structured questionnaire, telephone calls, via mail or even a website with use of google form. Through this approach, necessary data about his customers attitude will be gotten with much ease.