The hormone that is used to keep flowers fresh is

Auxin

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Gibberellic acid

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Cytokinin

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Ethylene

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Solution

The correct option is B Cytokinin
Cytokinin helps in delaying senescence in plant parts that are cut like flowers and are used to keep cut flowers fresh i.e. increases shelf life of the cut flowers.

So, the correct answer is 'Cytokinin'.

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Gibberellic acid has been successfully employed to induce flowering

Gibberellic acid induces flowering

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