Final answer:
More context is needed to determine how Ruthie's and Spencer's points of view differ, as each choice provided suggests different aspects of their perspectives without additional information.
Step-by-step explanation:
To determine how Ruthie's and Spencer's points of view differ at first, we need more context from the given text or story. Without that context, we can't provide an accurate answer to the question as to whether Ruthie and Spencer have differing opinions about the plant's survival, their dad's opinion on the plant, the plant’s true nature, or the cost of the plant. Each choice given suggests a different aspect of their viewpoints.