Final answer:
The 'Jacksonian Democracy' period is best characterized by option D, increasing the right to vote in the United States, through the abolition of property qualifications for nearly all white men.
Step-by-step explanation:
The period of "Jacksonian Democracy" was marked by a number of significant changes in American political life. Among the options provided, the correct characterization of this era is increasing the right to vote in the United States. During the presidency of Andrew Jackson, there was a notable extension of democratic practices, which included the abolition of property qualifications for voting for nearly all white men and the emergence of a political system based on party loyalty. Far from the elimination of the spoils system, it actually thrived during Jackson's time. Contrary to a decrease in Executive Branch power, Jackson himself was known for his strong-willed use of presidential power, including his usage of the veto.