The relevant opportunity costs for you and your friend for allocating four hours to attending the concert are<u> "watching a sporting event on TV for you and studying for your friend.
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An opportunity cost is characterized as the estimation of a forgone action or elective when another thing or action is picked. Opportunity cost becomes possibly the most important factor in any choice that includes a tradeoff between at least two alternatives. It is communicated as the relative cost of one option as far as the next best option.  
 
        
             
        
        
        
Answer:
buy $300,000 worth of bonds
Explanation:
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Based on business strategy, the salesperson needs to pay close attention to the buyer's interests during the need discovery phase to "<u>uncover the dominant buying motives."</u>
<h3>What is the Need Discovery Phase?</h3>
The need discovery phase is when firms or salespeople try to understand the motives of the consumers, their needs, and requirements.
As a salesperson, knowing why the buyer or consumer wants to buy a product will give you an edge to know how to market your products to the consumer.
Hence, in this case, it is concluded that the correct answer is "<u>uncover the dominant buying motives."</u>
Learn more about Need Discovery Phase here: brainly.com/question/25571041