While Africa is vast, the island of New Guinea (part of Oceania) has an extremely high concentration of unique languages. Papua New Guinea alone has over 800 languages, making this region the most linguistically diverse.

Delhi, on the Yamuna River, faced 2025 concerns over its riverfront development, as noted in X posts. Agra is also on the Yamuna, Varanasi is on the Ganges, and Lucknow is on the Gomti, making Delhi the correct choice.

Baghdad, on the Tigris River, was selected for a 2025 study on sustainable urban development along its riverbanks, as per a web source. Mosul and Basra are on other rivers, and Erbil lacks a major river, making Baghdad the correct choice.

Budapest, split into Buda and Pest by the Danube River, is celebrated as one of the world’s most beautiful river cities in a 2025 X post. Debrecen, Szeged, and Pécs are not on the Danube, making Budapest the correct choice.

Belgrade, Serbia’s capital, is uniquely positioned at the confluence of the Danube and Sava rivers. This strategic location has historically made the city a contested and vital point for trade and military control in the Balkans, shaping its cultural and economic significance.

Miami Beach is famous for hosting world beauty contests, like Miss Universe, and its vibrant tourism scene. Unlike automobile, textile, or space centers, beauty pageants define its significance, as correctly indicated in the document.

Lop Nor, China, is a significant site for nuclear weapons testing, used by China since the 1960s. Unlike textile, tourism, or agricultural centers, its military role defines its importance, as correctly indicated in the document.

Jerusalem is the capital of Israel, a city of immense religious and historical significance for Judaism, Christianity, and Islam. It houses key government institutions, though its status is internationally contested.

The verb "testified" is followed by the preposition "for," which means to give evidence or support for something.

No one's privacy is so sacred that it can not be trespassed ____ occasionally.
(a) upon (b) on (c) in (d) into

The verb "tempered" is followed by the preposition "with," which means to moderate or soften something.

Experts have testified ____ the machine's excellent performance.
(a) at (b) on (c) for (d) away