Answer:
The statement which is true about Shakespeare’s sonnets is:
They are composed of three quatrains and a couplet at the end.
Step-by-step explanation:
The sonnets written by Shakespeare have three quatrains and a couplet. The rhyme scheme of the sonnet is abab cdcd efef gg. The sonnets have been written in iambic pentameter. After the third quatrain, a volta appears which shows a turn or change of thought in the sonnet.