⇒The meaning of usage is to find the effect of something on environment or on us, either the process is Natural or man made.
In last three options, that is in Option, B, C and D
In B, we are preparing the experiment,which kind of experiment it is, not finding the effect of experiment.
In option C, description of sample is not given.
And,In option D,what data is about is not given.
Option A
Considering the environmental impacts of an experiment
is an example of Usage ethics in experiments.
