The answer is: The flowers in the garden bloom beautifully.
The verb <em>to be</em> can be conjugated as <em>am, is, are, was, were </em>or <em>been, </em>and it signifies to exist, occur o take place. In that respect, the chosen sentence does not possess the verb <em>to be</em> - it actually contains the verb <em>bloom</em>, which means to produce flowers.
The rest of the sentences are incorrect because all of them include conjugations of the verb to be, such as <em>is </em>and <em>was</em>.
Macbeth is feeling invincible in this scene. His mania has risen to a level where he feels he cannot be touched or hurt until Birnam wood comes to his castle, which he believes to be an impossibility. He has taken the witches' prophecies and held them in his mind as if they put him on top of the world. He carelessly yells at his staff and demands that the doctor just simply fix Lady Macbeth. His mood is summed up at the end of the scene when he says "I will not be afraid of death and bane / <span>Till Birnam forest come to Dunsinane". This shows that he will never be afraid of death or being hurt until the forest comes to him.</span>
