The sun is located

in the central core of the milky way galaxy
in the bar of the milky way
in an arm about 25% of the distance from the center of the milky way to its outer edge
in an arm about 75% of the distance from the center of the milky way to its outer edge

its definately in an arm. your best bet would be 25 percent or C

The correct answer for the blank is-

in an arm about 75% of the distance from the center of the Milky Way to its outer edge.

The Sun is located in the inside of the Orion Arm, which is a branch of the Sagittarius Arm that is considered to be one of the major arms of grand spiral galaxy ( The milky way) .

The Sun is located about 26,000 ly ( light years) far from the center, which is approximately about 75% of the distance from the center of the Milky Way to its outer edge.

Thus, last option is the right answer.

that is wrong, its not thymus.

haha

it's made from mineral oil