The answer is b how bird choose were to build there nest
In Bach's day, the Lutheran church service lasted about 4 hours.
Answer:
mail questionnaires
Explanation:
Mail questionnaire: In research, the term mail questionnaire is defined as a form or type of questionnaire that is being mailed by the researcher to the targeted persons or group, that possesses a specific collection of questions on a few specific topic being asked to them and determined as a part of the survey or interview which is used for researching on that particular topic.
Advantage: Anonymity and confidentiality.
In the question above, Kathy's purpose is being best served by a mail questionnaire.