For the year 2020, what is the maximum deductible contribution Jack can make to a traditional IRA?

For the year 2020, the maximum deductible contribution that an individual could make to a traditional IRA is $6,000. However, if the individual is aged 50 or older, they are eligible for a catch-up contribution, allowing them to contribute an additional $1,000. This brings the total allowable contribution for those aged 50 and older to $7,000.

In this scenario, if Jack is 50 or older in 2020, he is permitted to make a maximum deductible contribution of $7,000 to his traditional IRA, which is a provision designed to help older individuals save more for retirement. It reflects the IRS's recognition that individuals nearing retirement may need to boost their savings during this critical period.

Therefore, the correct answer is rooted in the specific contribution limits established by the IRS for traditional IRAs, particularly acknowledging the additional catch-up contribution available for those aged 50 and over.