A more or less circular ring of mushrooms appears in your yard, apparently overnight. The circle is several yards in diameter. The most likely explanation for this circle of mushrooms is that:
A) the mushrooms are all part of the same organism, with mycelia radiating out from the location of a germinated spore.
B) a circle is nature's most perfect shape for asexual reproduction structures.
C) the fungus produces a toxin in the center to prevent too many mushrooms from being produced.
D) one mushroom in the circle reproduced sexually to make all the other mushrooms in the circle.
Answer: A
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