Question

practice it!
which of the following is a benefit of descriptive investigation?
able to study topics that experiments cannot test
does not have variables
results repeated and verified
includes a conclusion

Explanation:

Descriptive investigations are observational and can study topics that experiments cannot (e.g., observing natural phenomena over time without manipulation). They do have variables (just not manipulated like in experiments). Results aren't repeated and verified like in experimental methods. And while they may have some form of summary, it's not the same as a conclusion in an experimental sense.

Answer:

able to study topics that experiments cannot test