For each of the following independent cases, indicate the amount of gross income that must be included on the taxpayer's $2023$ income tax return.

If an amount is zero, enter $"0".$

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a$.$ Malchia won a $$4,000$ humanitarian award.

fill in the blank $1$ of $1$$

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b$.$ Rob won a new automobile $($with a sticker price of $$15,700$ and a market value of $$14,500)$ for being the best junior tennis player in $2023.$

fill in the blank $1$ of $1$$

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c$.$ George received a $$3,500$ tuition and fees scholarship to attend Western University.

fill in the blank $1$ of $1$$

$0$