Answer:
The correct choice is A) Raising a child is an enormous financial responsibility. Then there's the emotional investment involved.
This choice is correct because it uses appropriate punctuation and structure to convey the intended meaning. The sentence is divided into two parts, with a period separating them. The first part states that raising a child is a significant financial responsibility. The second part adds that in addition to the financial aspect, there is also an emotional investment involved.
By using a period, the sentence creates a clear separation between the two ideas. This punctuation choice helps to emphasize the separate but related nature of the financial and emotional aspects of raising a child