Which of the definitions is the best for blocks as it is used in this sentence?

the peachtree road race in atlanta, ga is the world’s largest 10k, boasting 55,000 runners who line up for blocks at 7: 30am to run down atlanta’s most famous street.

the length of one side of a block, especially as a measure of distance.

A line can be measured. Lining up for blocks would mean people form a very long queue, which stretches over the distance of a few blocks.

she is as quiet as a mouse.

she is she shy like a bunny.

she is as beautiful as roses.

the answer is a.

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hope this !