Question

to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely - controlled video cameras near the lions den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations. this example shows that
a. conditions and variables are best controlled in observational field studies.
b. observational field studies are not a valid form of scientific investigation.
c. there is only one way to acquire scientific knowledge.
d. not all scientific knowledge is gained through controlled laboratory experiments.

Explanation:

In observational field studies, conditions and variables are not controlled. This example shows that observational field studies are a valid form of scientific investigation. Also, scientific knowledge can be gained through methods other than controlled laboratory experiments.

Answer:

A. conditions and variables are best controlled in observational field studies. (Incorrect as variables are not controlled in observational field studies)
B. observational field studies are not a valid form of scientific investigation. (Incorrect as they are valid)
C. there is only one way to acquire scientific knowledge. (Incorrect as there are multiple ways like experiments, observations etc.)
D. not all scientific knowledge is gained through controlled laboratory experiments. (Correct as shown by the observational field study example)