Based on its role as outlined in the us constitution which function is most commonly carried out by the house of representatives

The purpose most usually conducted by the House of Representatives is to formulate legislation. The Congress is designed by the two houses, and while they may have any disagreements, their duties are essentially authoritative, so they have to designed and introduced the ultimate rules of the united states and presented them in series to recommend those. 

i believe the answer would be 1.

i discarded the supernatant and kept the pellet in this part of the experiment because you have to return all unused chemicals into their original containers at the end of each labratory.

explanation: