Please tell me how to fill out this chart I'm so confused

What was the main aim of the northwest ordinance of 1787

States might choose to cooperate at the regional or global level for all of the following reasons except (2 points) a.) to gain regional political influence b.) to engage in dispute resolution c.) to assure basic human rights d.) to encourage economic interaction e.) to increase national sovereignty

Why are radio observatories located in valleys far away from urban centers? a. to shield them from electromagnetic interference b. to avoid sound pollution c. to avoid disturbing people living in the city d. to shield them from water vapor