ANSWER: a. tragedy.
EXPLANATION: Many of William Shakespeare's writings were tragedies. His romantic writings were released at a later stage in his career and was either classified as a tragedy or a comedy. Titus Andronicus, Romeo and Juliet, Julius Caesar, Hamlet, Troilus and Cressida, Othello, King Lear, Macbeth, Timon of Athens, Antony and Cleopatra are few of the tragedy plays of Shakespeare.
To determine the root cause of contamination
Taking into account that a simile is a literary device used to compare two unlike things, the following examples provide a clear use of this resource in Shakespeare's masterpiece "Hamlet" (act three scene one):
King Claudios: <em>"For we have closely sent for Hamlet hither,
that he, </em><em>as </em><em>'twere by accident, may here affront Ophelia." </em>
Ophelia: "...<em>words of so sweet breath composed </em><em>as</em><em> made the things more rich..."</em>
Words such as "like" or "as" help the reader identify the use of this figurative speech.