In act 4.3, why do Brutus and Cassius go into Brutus’ tent to argue instead of staying out in the open?

Brutus and Cassius take their disagreement into Brutus’ tent so their soldiers will not witness the quarrel. They want to maintain the appearance of unity in front of their armies, even though they are divided privately. This makes “They do not want to appear divided in front of their armies” the correct choice.

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