Which of the following examples BEST illustrates taxation using the progressive principle?

All citizens with jobs are taxed 1.45% of their income for Medicare.

The state of Florida increases the sales tax to 7.5% for non-essential goods and services.

The Jacksonville City Council votes to increase the property tax milage rate for all property owners in the city.

Zach who makes $50,000 a year is taxed at a marginal rate of 25% while Javier who makes $500,000 a year is taxed at a marginal rate of 39.6%.