Name one benefit and one limitation of comparative investigations.

Comparative investigations aim at collecting data of two similar groups or items and inferring the similarities and contradictory phenomenon in the posed group is called comparative investigation or analysis.  

Explanation:

Comparative investigations refer to the process of collecting data and information of organisms, objects, features or collecting data under two different situation and circumstances in order to make a comparison. The similarities and the contradictory aspects are also compared in comparative investigation

The benefit of such comparative studies is that a huge data is amassed from different situations and it enables for an in-depth analysis of the situation. One limitation is that sometimes such huge data for comparison can be biased and the results of such analysis may be misleading too.

what the first or next guy says

question:  

the chart compares religious beliefs to us political party support.

religious beliefs and party support, 2012

this chart demonstrates that

a) more highly religious people supported the republican candidate, while more nonreligious people supported the democratic candidate.

b) more highly religious people supported the democratic candidate, while more nonreligious people supported the republican candidate.

c) more moderately religious people supported the republican candidate, while more nonreligious people supported the democratic candidate.

d) more moderately religious people supported the democratic candidate, while more nonreligious people supported the republican candidate.

answer: a.