Alpacas' fleece is worth surprisingly little compared to their market value; a top breeding specimen bringing upwards of $100,000 even if five pounds of fleece fetches only $80 to $240.
a Alpacas' fleece is worth surprisingly little compared to their market value; a top breeding specimen bringing upwards of $100,000 even if five pounds of fleece fetches
b Alpacas' fleece is worth surprisingly little in comparison with its market value; a top breeding specimen bringing upwards of $100,000 while five pounds of fleece fetches
c The fleece of the alpaca is worth surprisingly little compared to its market value, while a top breeding specimen can bring upwards of $100,000 even though five pounds of fleece fetch
d The fleece of the alpaca is worth surprisingly little compared to the animal's market value; a top breeding specimen can bring upwards of $100,000 while five pounds of fleece fetch
e The worth of the alpaca's fleece is surprisingly little compared to the animal's market value; a top breeding specimen can bring upwards of $100,000 even though five pounds of fleece fetches
The original sentence contains several errors. First, the pronoun "their" logically refers to alpacas; however, since the word alpacas' is in possessive form, it is an awkward antecedent for any pronoun (although it is technically legal to refer to a possessive noun with a possessive pronoun such as "their"). Second, the singular verb "fetches" is paired with the plural noun phrase "five pounds of fleece." Third, the use of the semicolon is improper. A semicolon can correctly be used to separate two independent clauses (subject + verb). Here, however, what follows the semicolon is not a clause since it can not stand alone as a sentence.
The correct answer is D.
Can you please go into detail about plural noun phrases? How they differ from subject phrases (singular)? How to identify them?
PS Thanks for the great responses to my other questions.