A family includes a mother, stepfather, two teenage biological daughters of the mother, and a biological daughter of the father. Of what type of family is this an example?

This type of family is an example of a Blended family

A Blended family is a family comprising of a mother, father and children from their previous relationships/marriages whom are not biologically related to one another ( i.e. they do not share either the same father or mother biologically ).

This type of family setting can also be described as a stepfamily and it can be peaceful if the offsprings from the previous relationships accept and understand each other.

Hence we can conclude that this type of family is an example of a Blended family.

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Blended family

Explanation:

Blended family, which is also referred to as a step family, describes a type of family that is made up of two parents with children who are not biologically related as either of one or both parents had had children from their previous marriage, and are now blended together, living as a family unit. In other words, both parents live together with their children they got from their previous relationships, in which the children of one parent, are not related biologically to the other.

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.