Ancient Romans made many contributions to modern architecture. dome

lighthouse

aqueduct

watermill

C.aqueduct

Explanation:

Its C. Aqueduct because it kind of sounds like aqua and as we all know aqua means water and that my friend, is a water bridge; aqueduct.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.

the question deals with financial planning and the answer is that dan did not stay on budget due to the fact that this guy needs to start decreasing his discretionary spending. according to the financial plan, he needed to balance his expenses and resources.