Why were the United Farm Workers boycotting grapes? to bring national attention to the struggles of migrant workers
to ensure that farm workers could return to their native countries
to increase government oversight of food quality
to add protection to farmers and their crops

it was to protest years of poor pay and working conditions.

so I'd say the first choice

in mcculloch v. maryland (1819) the supreme court ruled that congress had implied powers under the necessary and proper clause of article i, section 8 of the constitution to create the second bank of the united states and that the state of maryland lacked the power to tax the bank.

gibbons v. ogden, (1824), was a landmark decision in which the supreme court of the united states held that the power to regulate interstate commerce, granted to congress by the commerce clause of the united states constitution, encompassed the power to regulate navigation.