One way an english sonnet is different from a petrarchan sonnet because an english sonnet contains
a couplet < a sestet give quatrains none of the above

A couplet is the correct answer.

Explanation:

A Petrarchan sonnet has its own rhyme and structure, meaning that they are composed by two stanzas and octave (eight lines) and a sestet (six lines) or they may have three stanzas (two quatrains -four lines- and a sestet;) on the other hand, the English sonnet has fourteen lines with three quatrains (12 lines) and a couplet (two lines.)

c. the coughing sounds

explanation:

- "a nonrestrictive clause functions as a modifier to a noun (that is an object, person or concept). these clauses can be described by the following three options: it is set off by comas, it contains a subject and a verbs and it adds nonessential information to the sentence.

for example, in "here is bill gates, who confounded microsoft software company" we can identify "who confounded microsoft software company" as a nonrestrictive clause modifying the noun bill gates. this clause can be describes as a nonrestrictive clause because it is separated by a comma, it adds nonessential information to identify who bill gates is and it must contain both a subject (who) and a verb (confounded)."