The correct options are
A Sadashiva Raya was very young when he ascended the throne.
C Rama Raya was a very skilled general.
D Vijayanagara was at its weakest during his reign.
Sadashiva Raya was just a minor, a child when he became the emperor of the Vijayanagara empire. When Sadashiva Raya was the emperor, his regent was Rama Raya. Due to weak statesmanship, they had a lot of enemies who came together to defeat them in the battle of Talikota.