Answer:
The two events are independent because having brown eyes does not depend on being male or female.
Explanation:
Dependent & Independent Variables relationship show the cause effect relationship between two variables.
Independent Variable is the variable which is the causal variable, leading to effect in Dependent Variable. Dependent Variable is the variable being effected by Dependent Variable.
Person's eye colour & his / her sex (male or female) are not related to each other. Brown colour eyes don't depend on a person being male or female. So, these variables are un-related to each other, or - independent of each other.