Anurse educator is conducting a learning needs assessment prior to teaching a group. which is the best method to collect information quickly while safeguarding individual privacy? structured interviews focus groups questionnaires observations

For a nurse educator conducting a learning needs assessment prior to teaching a group, the best method to collect information quickly while safeguarding individual privacy is through questionnaires. The questionnaires will consist of a series of questions for each individual to answer and it does not require one to include his/her name. Structured interviews and focus group discussions, on the other hand, involve direct interaction with the individuals concerned. This means that their identity will be known. Conducting mere observations may not be that insightful since you do not get to ask the individuals the relevant questions you want to know. 

The correct answer is  b)