Answer:
a) round
Step-by-step explanation:
According to the given description, Romeo undergoes different emotional states and he may even react in an unexpected way towads the end of the play. The description tells he is reflective , romantic but moody. This last attribute tells he is prone to change his emotions overnight. Then, he is described as someone impulsive . Finally, he is told to be a pessimist. All these attributes make him round, which means he is a complex character.