Answer:
Option D, the belief that Clay supported Adams in return for becoming secretary of state
Step-by-step explanation:
In the election of 1824, none of the candidates was successful in getting majority votes due to which the House of Representatives elected John Quincy Adams. It is believed that Clay convinced the House of Representatives to elect Adams. Later, Adams selected Clay as the Secretary of State. This setting of clay and Adams appeared as a "corrupt bargain" to the supporters of Jackson
Hence, option D is correct