<p>Mr. Darcy has gained significant <span style="text-decoration: underline;">recognition</span> in the industry as an expert on intellectual property.</p>
<p>The correct answer is (D) recognition.</p>
<p>The word "recognition" means being acknowledged or identified for one's achievements or abilities. In the given sentence, it is used to describe the level of esteem or regard that Mr. Darcy has achieved in the industry as an expert on intellectual property.</p>
<p>Option (A) perception refers to the way someone interprets or understands something. While it is possible for Mr. Darcy to have a positive perception in the industry, it does not convey the same level of professional standing as recognition.</p>
<p>Option (B) assimilation refers to the process of integrating or absorbing information or ideas. It does not accurately describe Mr. Darcy's standing in the industry as an expert.</p>
<p>Option (C) implication refers to a possible conclusion or inference that can be drawn from something. It does not accurately describe Mr. Darcy's standing in the industry as an expert.</p>
<p>Therefore, the most appropriate word to fill in the blank is "recognition" as it conveys the idea of Mr. Darcy being acknowledged and respected for his expertise in the industry.</p>