What is the best way to gather information for each of the scenarios?

select survey, experiment, or observational study for each scenario.

1.Observation study

2.Survey

3.Experiment

4.Survey

Hope thiz Help:)

Survey, observational study, observational study, survey

Step-by-step explanation:

In the first one, the director wants to know what his singers do before a performance.  The director cannot observe each singer at the same time, so he should use a survey.

In the second one, the director wants to know who his best soprano is.  The best way to determine this is by simply observing.  Observational study.

In the third one, the directer wants to know how verbally disciplining a singer affects the group.  Again, the best way to determine this is by observing.  Observational study.

In the fourth one, the director wants to know what musical is the most popular.  This of course requires a survey.

sorry can't

step-by-step explanation:

i googled though and something came up but it was in science langueage not common english sooo