In a hardening process:-

Plantlet is placed in reduced light and high humidity for short time.

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Plantlet is placed in favourable conditions for long time.

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Plantlet is transfer in a new fresh medium.

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Plantlet is placed in a high light intensity.

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Solution

The correct option is A Plantlet is placed in reduced light and high humidity for short time.
Hardening refers to the preparation of the plants for a natural growth environment. During this process, plantlets are transferred from culture medium to the warm environment with high humidity and low light for short time period to make it easy to adjust in the natural environment. Thus, the correct answer is option A.

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