Mara's grandfather was a spare man, all elbows and knuckles, who seemed to have been assembled from whatever was left over after the larger men of the valley had been built. He ate little, spoke less, and moved through the orchard with the economy of someone who had long ago stopped wasting motion. Yet when a storm tore through in late August and the pickers stood staring at branches split down to the trunk, it was he who climbed the ladder first, a coil of wire looped over one shoulder, and began binding the broken limbs as calmly as if he were tying a child's shoe. By evening the younger men had followed his lead, and by the next week the bandaged trees looked oddly dignified, like veterans returned from a war. Mara watched him at supper that night, the same silent figure bent over a bowl of soup, and wondered how much strength a person could hide inside so small a container. She decided she would never again mistake quietness for weakness, in him or in anyone.
As used in the first sentence, the word "spare" most nearly means
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Answer: C. lean and thin in build
The rest of the sentence, "all elbows and knuckles" and "assembled from whatever was left over," describes the grandfather's lean body, and the passage later calls him "so small a container." He does speak little, but that detail comes in the next sentence; here the word describes his build, not his speech or his free time.