The answer which is not true about a Shakespearean sonnet is D. It has one quatrain and three couplets. In fact, it is quite the opposite - it has three quatrains and one couplet. All of the other answers are correct when it comes to the Shakespearean sonnet.
<span>Shakespeare’s sonnets are written predominantly in a meter called iambic pentameter, a rhyme scheme in which each sonnet line consists of ten syllables. The syllables are divided into five pairs called iambs or iambic feet. An iamb is a metrical unit made up of one unstressed syllable followed by one stressed syllable. Therefore the answer is D. </span>