Select the most appropriate option to fill in the blank.

I feel so lazy and ______ after doing any strenuous work.

sluggish

The most appropriate option to fill in the blank is sluggish.

The sentence is about how the speaker feels lazy and sluggish after doing any strenuous work. The word "sluggish" means "slow and lacking in energy." This is the most accurate description of how the speaker feels after doing strenuous work, as they are tired and not motivated to do anything.

The other options are not as appropriate.

• Lively means "full of energy and excitement." This does not make sense in the context of the sentence, because the speaker is not feeling energetic or excited after doing strenuous work.
• Fortunate means "lucky or well-off." This does not make sense in the context of the sentence, because the speaker is not feeling lucky or well-off after doing strenuous work.
• Bouncing means "moving up and down quickly and lightly." This does not make sense in the context of the sentence, because the speaker is not moving up and down quickly and lightly after doing strenuous work.