Question

The IAU demoted this object to dwarf planet in August 2006. It's the second largest dwarf planet. Clyde Tombaugh discovered it in 1930.

a. Makemake
b. None of the these.
c. Charon
d. Sedna
e. Ceres

Answer 1

Pluto, demoted to a dwarf planet in 2006 and discovered by Clyde Tombaugh, is the largest dwarf planet. Eris is the second-largest, followed by a. Makemake and Haumea. Ceres is the smallest known dwarf planet.

Step-by-step explanation:

The object that the IAU demoted to a dwarf planet in August 2006 is Pluto, which was discovered by Clyde Tombaugh in 1930. It is not the second largest but rather the largest known dwarf planet.

The second-largest dwarf planet is Eris, which is just slightly smaller than Pluto. Other notable dwarf planets include a. Makemake, Haumea, and Ceres, which is the smallest among them and was discovered at the beginning of the 19th century and is also referred to as a dwarf planet.