Barbie needed to keep winning the hearts of the youngest children buying a fashion doll for the first time (or persuading their parents to do so) is an example of:

Type 1 Rivalry: Competing For Potential Customers

Explanation:

Barbie's goal to keep winning and capturing the hearts of the youngest children or even the hearts of their parents who are buying a fashion doll for the first time is an example of Type 1 Rivalry. This is a competition in order to acquire new customers.

Barbie's understanding of her customers to be new in the purchase of fashion dolls, positions her to strategize and divert customers to herself. She must understand what is driving customer's choices.

Therefore, this is an example of Type 1 Rivalry.

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