<p>In many companies, platform decisions, particularly those <u>regarding</u> hardware, are still made well in advance of the interaction designer's involvement.</p><div data-answer="b"><span style="font-size: 13.008px;">The correct answer is (B) regarding. </span></div><div data-answer="b"><span style="font-size: 13.008px;"><br></span></div><div data-answer="b"><span style="font-size: 13.008px;">The sentence is discussing platform decisions that are made in advance of the interaction designer's involvement. The word "regarding" is used as a preposition to show the relationship between the platform decisions and the hardware. </span></div><div data-answer="b"><span style="font-size: 13.008px;"><br></span></div><div data-answer="b"><span style="font-size: 13.008px;">(A) "regard" is a noun that means consideration or attention. It cannot be used in this sentence to show the relationship between the decisions and the hardware. </span></div><div data-answer="b"><span style="font-size: 13.008px;">(C)</span><span style="font-size: 13.008px;"> "regarded" is the past tense form of the verb "regard," but it does not fit grammatically in this sentence.</span></div><div data-answer="b"><span style="font-size: 13.008px;">(D)</span><span style="font-size: 13.008px;"> "regards" is the third person singular form of the verb "regard," but it does not fit grammatically in this sentence.
Therefore, the correct choice is (B) regarding.</span><br></div>