Explanation
Correct answer: B.
Choice B is the best answer. The sentence provides an overview of the Haber-Bosch process, explaining that it uses an iron catalyst, high temperatures, and high pressures to manufacture ammonia from nitrogen and hydrogen.
Why the other choices are wrong
Choice A
Choice A is incorrect. While the sentence identifies some of the process’s required components (nitrogen, hydrogen, and an iron catalyst), the overview is incomplete; it doesn’t explain what the process does (produces ammonia) or mention the conditions needed for it to function (high temperatures and pressures).
Choice C
Choice C is incorrect. While the sentence indicates who invented the process (Fritz Haber and Carl Bosch) and that it produces ammonia, the overview is incomplete; it doesn’t mention any of the necessary ingredients or conditions.
Choice D
Choice D is incorrect. While the sentence mentions the inventors of the process along with the required conditions (high temperatures and pressures), it doesn’t explain that the process produces ammonia or indicate what components are needed.