A) Expression of humility to Congress
Answer: In my opinion, it’s measurement is a fundamental aid in the engineering world. You may need to measure things. Say a NASA engineer wants to build a new engine for a spaceship model. They will need to measure many things to get the engine to fit the ship, and to fit all the bits inside. Measure also helps the efficiency, and the quality. You wouldn’t want a MacBook that’s 5 yards long!
The answer should be an object of a verb. The bold words are neither a proposition(which is a word that expresses a relation to another word, like "after" or "next to") or the subject. The subject in this case would be the city of Washington.
