Final answer:
The Nurek Dam in Tajikistan is 984 feet high with an additional 52 feet of concrete under the river.
Step-by-step explanation:
The subject of this question is Geography, as it asks about the Nurek Dam in Tajikistan. The Nurek Dam is 984 feet high, with an additional 52 feet of concrete under the river.
The correct answer to this question is (d) Nurek Dam. The Hoover Dam (a) is in the United States, the Eiffel Tower (b) is in France, and the Empire State Building (c) is in the United States as well.