Correct Answer: gathered

Solution : The first option is the correct choice.

The given sentence means that someone (presumably he ) collected or brought together all of the leaves that had fallen during the autumn season. Here, gathered is the most suitable word because it specifically means to bring things together, which aligns perfectly with the idea of collecting autumn leaves.

The meanings of the other options are as follows:

• Garnished : This term typically refers to decorating or embellishing something, often with an additional decorative element.
• Smothered : This word means to completely cover or suffocate something.
• Withered : This word means to dry up or shrivel, usually due to a lack of moisture or vitality.

Therefore, the complete sentence is: He gathered all the autumn leaves.