Final answer:
The author's purpose for the writing is to define what a hypothesis is and explain its role as a starting point for further investigation.
Step-by-step explanation:
The author's purpose for the writing is to define what a hypothesis is and explain its role as a starting point for further investigation. The author provides a clear and concise definition of a hypothesis, stating that it is a proposed explanation made on the basis of limited evidence. By doing so, the author aims to provide readers with a solid understanding of the concept.
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