An experiment is set up to measure the effect of a gasoline additive on fuel consumption rate (miles per gallon, or mpg). what would be the control in this experiment?
a. the highest mpg observation
b. the smallest car available for the experiment
c. the mpg measurement in the observation that has no additive
d. the mpg measurement of the first observation using the additive

Read the excerpt from frederick douglass’s speech “what to the slave is the fourth of july? ” go where you may, search where you will, roam through all the monarchies and despotisms of the old world, travel through south america, search out every abuse, and when you have found the last, lay your facts by the side of the everyday practices of this nation, and you will say with me, that, for revolting barbarity and shameless hypocrisy, america reigns without a rival. which phrase best describes the connotation of the word “reigns”? a sense of opportunity and growth a sense of fear and anxiety a sense of compassion and humanity a sense of oppression and domination