Why is macbeth both excited and fearful after hearing the witches' prediction about his future?
a. the witches told macbeth that even though he would not be king, his children would inherit the throne.
b. the witches are powerful, and macbeth is afraid they will do something to harm the king.
c. the witches told macbeth that he would be a great hero even though he would be killed in battle.
d. the witches told macbeth that he would be king, and he is worried about his role in making the prediction come true.

She took up a scalpel and slit the monkey's abdomen, making a slow and gentle cut, keeping the blade well away from her gloved fingers. the spleen was puffed up and tough, leathery, like a globe of smoked salami. she did not see any bloody lesions inside this monkey. she had expected that the monkey's interior would be a lake of blood, but no, this monkey looked all right, it had not bled into itself. if the animal had died of ebola, this was not a clear case. she opened up the intestine. there was no blood inside it. the gut looked okay. then she examined the stomach. there she found a ring of bleeding spots at the junction between the stomach and the small intestine. this could be a sign of ebola, but it was not a clear sign. it could also be a sign of simian fever, not ebola. therefore, she could not confirm the presence of ebola virus in this animal based on a visual inspection of the internal organs during necropsy.