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    Let X be a connected metric space with at least two points. Which of thefollowing is necessarily true?
    Question

    Let X be a connected metric space with at least two points. Which of thefollowing is necessarily true?

    A.

    X has finitely many points.

    B.

    X has countably many points but is not finite.

    C.

    X has uncountably many points.

    D.

    No such X exists.

    Correct option is C

    A connected metric space cannot be decomposed into two or more disjointnon-empty open subsets.

    This implies that if the space is connected and has atleast two points,

    it must :

    1. Have infinitely many points.

    2. Be uncountable (because a countableconnected space would violate the properties of being a connected metric space).

    Thus: - X cannot have finitely many points because a finite metric spacecannot be connected

    unless it has only one point. - X cannot have countablymany points but not be finite because

    such a set cannot satisfy the conditionsof connectedness in a metric space.

    Therefore, the only possibility is that X has uncountably many points.

    Correct Answer : Option (C). 

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