Laissez-Faire is an economic policy that says governments should not interfere with the free market; let the market develop on its own.
Answer: d) The "space race" was a Cold War competition by scientist.
Explanation: D is the best option because it puts "space race" as the subject of the sentence.
The subject is the main focus of the sentence.
Option A does this as well, but the sentence is very wordy and does not do enough to draw attention to "the space race".
Option B keeps the scientists as the subject of the sentence.
Option C makes the "space race" part of a prepositional phrase which can be eliminated.
Hence, Option D is the correct answer.
Some of the similar physical features that Mexico (a country) and Kentucky (a State) shares are: both have borders formed by rivers, and are located over tectonic plates, that make both vulnerable to earthquakes. The main differences are the territory (Mexico almost 750 thousand sq mi whereas Kentucky 40 thousand sq mi), climate, topography, and biodiversity.
The Roman Empire split into Eastern and Western Rome so were easily destroyed by the Goths, Franks, Huns and Vandals.