Final answer:
The situation in Texas during the Jackson administration contributed significantly to the debate over slavery's expansion and was a key factor in increasing sectional controversies, leading to its admission as a slave state in 1845.
Step-by-step explanation:
The issue of Texas during the Jackson administration and its successor administrations encapsulated and intensified the sectional controversies of the time, particularly regarding the expansion of slavery and the balance of power between free and slave states. The independent Texas gained recognition from the United States under Jackson in 1837, but concerns over its admission as a slave state delayed its annexation.
Eventually, President James K. Polk, advocating for the expansion of American lands, used the annexation of Texas and the Oregon Territory as key points in his presidential campaign in 1844. However, the eventual annexation of Texas in 1845 heightened tensions and contributed to the sectional debates that were a significant prelude to the American Civil War. The correct answer to the schoolwork question about how the situation in Texas fits into the greater narrative about sectional controversies during the Jackson administration is C) It contributed to the debate over the expansion of slavery and Texas's admission to the Union.