Question

practice it!
select the statement(s) that are accurate examples of descriptive investigation.
writing down the recipe for cookies as your friend makes and bakes them.
recording the shapes of clouds as they pass the stoplight on your street.
a doctor monitoring his patient for 15 minutes after the patient takes a medication.
watching a squirrel in your front yard and recording its behavior for 5 minutes.
testing the speed of different sized marbles as they roll down a ramp and records their time and average speed.

Explanation:

A descriptive investigation involves observing and recording data without manipulating variables. Writing down a cookie recipe (observation of a process), recording cloud shapes (observation of a natural phenomenon), a doctor monitoring a patient (observation of a patient's state post - medication), and watching a squirrel and recording its behavior (observation of an animal's actions) are all examples of descriptive investigations as they are just recording what is seen. Testing the speed of marbles involves an experiment (manipulating variables - marble size) and is not a descriptive investigation.

Answer:

Writing down the recipe for cookies as your friend makes and bakes them.
Recording the shapes of clouds as they pass the stoplight on your street.
A doctor monitoring his patient for 15 minutes after the patient takes a medication.
Watching a squirrel in your front yard and recording its behavior for 5 minutes.