What percentage of trials did they select nutritionally poor urchins?

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Multiple Choice

What percentage of trials did they select nutritionally poor urchins?

Explanation:
To find the percentage, look at how many trials ended with nutritionally poor urchins selected and divide that by the total number of trials, then multiply by 100. If three trials show that outcome out of eight total trials, that’s 3/8 = 0.375, which equals 37.5%. The data align with that proportion, so this is the correct percentage. The other options would require different counts (for example, three out of ten is 30%, three out of twenty is 15%, etc.), which the data do not indicate.

To find the percentage, look at how many trials ended with nutritionally poor urchins selected and divide that by the total number of trials, then multiply by 100. If three trials show that outcome out of eight total trials, that’s 3/8 = 0.375, which equals 37.5%. The data align with that proportion, so this is the correct percentage. The other options would require different counts (for example, three out of ten is 30%, three out of twenty is 15%, etc.), which the data do not indicate.

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