Answer: (B) The study is an observational study.
Explanation:
A study in which a researcher observe the behavior of the participants in a certain manner without interfering then is known as observational study. There is no control over the variables.
On the other hand , In experimental study has control over one or more controlled factors to study the change in dependent factor .
A survey that asks the opinions of students about a proposed tour program to a hill station is an observational study because there is no controlled factor .
Every body has their own opinion with any dependence.