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(D) To calculate the percentage of water absorbed by raisins, we use the formula: $	ext{Percentage of water absorbed} = \frac{	ext{Final weight} - \

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Two times - before soaking and after soaking for a fixed duration.

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(D) To calculate the percentage of water absorbed by raisins, we use the formula: $	ext{Percentage of water absorbed} = \frac{	ext{Final weight} - 	ext{Initial weight}}{	ext{Initial weight}} 	imes 100$.Step $1$: Weigh the dry raisins before soaking to get the $	ext{Initial weight}$.Step $2$: Soak the raisins in water for a fixed duration (e.g., $2-3 	ext{ hours}$).Step $3$: Remove the raisins, pat them dry to remove surface water, and weigh them to get the $	ext{Final weight}$.Therefore, weighing is required two times: before and after soaking.

During the experiment to determine the percentage of water absorbed by raisins, when should the raisins be weighed?

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