Answer:when the taxpayer is a single 67-year-old with wages of $9,800---c
Explanation: Most taxpayers are eligible for the standard deduction which is the amount set by government that shows the amount one is eligible for and depends on age and filing status.
One does not need to file a return as long as the person[s income is less than their standard deduction.
In 2019, a criteria that makes an individual not to file a tax return if they Earn less than $12,200 (which is the 2019 standard deduction for a single taxpayer). or less than $24, 400 for married couples filing jointly .
Here,the answer is when the taxpayer is a single 67-year-old with wages of $9,800.This is because the tax payer's gross income is less than standard deduction for year 2019