Let's break down the problem step by step:
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Let \( x \) be the total number of apples picked.
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Sarah discarded \( \frac{1}{10} \) of the apples as defective, so the number of apples remaining is: \[ x - \frac{1}{10}x = \frac{9}{10}x \]
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Out of the remaining apples, 300 were made into cider. Therefore, the remaining apples after making cider are: \[ \frac{9}{10}x - 300 \]
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This remaining amount was sold as fresh fruit.
We now need to express the number of fresh fruit apples sold and find out what fraction of the total apples picked they represent.
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The number of apples sold as fresh fruit: \[ \text{Fresh fruit} = \left(\frac{9}{10}x - 300\right) \]
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We want to calculate the fraction of the total apples picked that were sold as fresh fruit: \[ \text{Fraction of fresh fruit} = \frac{\frac{9}{10}x - 300}{x} \]
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Simplifying the fraction: \[ \text{Fraction of fresh fruit} = \frac{9}{10} - \frac{300}{x} \]
Without knowing the total number of apples picked \( x \), we can't precisely determine the fraction of fresh fruit apples sold.
However, we can't determine the fraction without knowing \( x \), and thus we don't have enough information to select an answer from the options given.
So the answer is: B) Not enough information.