Final answer:
There is no minimum age requirement to open a traditional IRA; individuals of any age with earned income can set one up. The answer to the question is c) 18, emphasizing the necessity of having earned income to contribute to an IRA.
Step-by-step explanation:
The age at which someone can open a traditional IRA is not limited by being too young; there is no minimum age as long as they have earned income. Therefore, the correct answer to the question 'Anyone under the age of _____ who has earned income may open a traditional IRA' is c) 18. However, it's worth noting that while there is no minimum age for opening a traditional IRA, one must have earned income, which means income from working, not investments or pensions. Contributions to traditional and Roth IRAs are capped annually, and for 2014 and 2015, the limit was $5,500, or $6,500 for those aged 50 or older. As for voters, characteristics of those most likely to vote in the next election often include being over the age of forty-five.