The correct answer to this open question is the following.
Although there are no options attached we can say the following.
Why does President Jackson think that the speedy removal of the Native Americans is an advantage for the Native Americans?
Because he considered that the Native Indians would be in a better place in the reservations. This way they could implement self-rule. This also would diminish the conflicts between the federal and state governments in this regard.
With the removal, more white people would be able to settle the lands and make them productive.
Andrew Jackson encouraged westward expansion and settlement by supporting the Indian Removal Act.
On May 28, 1830, United States President Andrew Jackson signed the famous Indian Removal Act that supported the westward expansion and invited many Americans to settle territories in the west. These were territories west of the Mississippi, and the President could grant lands in exchange for Native American Indian tribes' lands that already existed within the known US territory.