Yes, there is a few figurative language. Sorry if wrong
        
                    
             
        
        
        
The correct answer is A. use a singular verb.
If a noun is singular, but also collective, it means that it has the form of a singular noun, but refers to more than one entity. However, based on the context, it will either take a singular, or a plural verb. 
For example: <em>The team is quite good</em> (where the team is a collective noun referring to all members together) VS. <em>The team are not behaving properly</em> (where this refers to all members individually). 
 
        
                    
             
        
        
        
From what I read, I would say B.
        
                    
             
        
        
        
Answer: A. a poetic foot made up of an unstressed syllable followed by a stressed syllable.
Explanation: In poetry, an iamb is a foot or beat consisting of an unstressed syllable followed by a stressed syllable, or a short syllable followed by a long syllable, iambic foots were used in traditional traditional English poetry and verse drama. So, according to this information, the correct answer is the definition given by option A:  a poetic foot made up of an unstressed syllable followed by a stressed syllable.