Answer : The correct option is, Cleavage.
Explanation :
Mica : It is silicate mineral and also known as sheet silicate because they form in different layers.
Cleavage : It is a type of mineral properties. It describes how a crystal breaks when stress apply to the crystal and breaks into a particular plane.
If the mica breaks due to stress and breaks into thin sheet, that means the mineral has cleavage.
Therefore, the correct answer is, Cleavage.