When the object designated 1992 qb1 was discovered, news reports suggested that there were now ten known planets in our solar system. in fact, the object is too small to qualify as a planet; still, its discovery has generated real excitement among astronomers. it confirms the existence of an entire class of objects orbiting the sun, in addition to the planets, asteroids, and comets.
astronomers had already suspected that several known objects in the region of the outer planets belonged to a special class of astronomical objects, small bodies composed of rock and ice. these "ice dwarfs" were thought to originate in the kuiper belt, which lies beyond the orbits of the planets 1992 qb1, currently located between the kuiper belt and the outer planets and apparently moving inward toward the sun, is the missing link that shows that ice dwarfs originate in the kuiper belt. it provides a stepping stone in theory, like the transition from always seeing a species of animal in captivity—from which one can hypothesize that such animals exist in the wild—to actually finding them in their natural habitat. ice dwarfs are not, however, mere oddities to add to the astronomical menagerie. objects like them were undoubtedly the building blocks of the giant planets.'
according to the passage, the discovery of 1992 qb1 provided astronomers with information about which of the following?

a) how ice dwarfs are formed
b) the place where ice dwarfs originated
c) the composition of ice dwarfs
d) the location of the kuiper belt
e) what role ice dwarfs played in the formation of the giant planets

Part a: which of the following captures how foreign residents, or xenoi, regarded their status or position in ancient greek society? a. while some city-states discouraged immigration, most ancient greek societies allowed foreign residents partial citizenship, the most that foreigners could hope to attain.b. the majority of foreign residents felt unsafe in ancient greek society, as they were almost always expelled or killed if caught; this is because ancient greeks considered themselves superior to many if not all other civilizations.c. while their rights were limited and their relationship with locals shaky, metics had the opportunity of social mobility and full citizenship status, for either themselves or their children.d. the xenoi saw themselves as advanced and providing new services to greek society, as they often brought with them new skills, like pottery.part b: which of the following quotes best supports the answer to part a? a. “greeks persuaded themselves that it was they who had the best environment and characteristics and the purest blood line and were, therefore, born to rule.”(paragraph 11)b. “aside from slaves, most greek poleis would have had a number of free foreigners (xenoi) who had chosen to re-locate from other areas of greece, the mediterranean, and the near east, bringing with them skills such as pottery and metalworking.” (paragraph 16)c. “despite the suspicions and prejudices against foreign “barbarians” which often crop up in literary sources, there were cases when metoikoi did manage to become full citizens after a suitable display of loyalty and contribution to the good of the host state.” (paragraph 16)d. “however, some states, notably sparta, at times actively discouragedimmigration or periodically expelled xenoi.” (paragraph 16)