Final answer:
The inscription on the Rosetta Stone describes Ptolemy V as a young king supported by priests. It praises him for his deeds for the temples and his dedication to religion. The stone's Greek inscription was key to deciphering hieroglyphics.
Step-by-step explanation:
The inscription on the Rosetta Stone describes Ptolemy V as a young king who was affirmed as a ruler by a council of priests. The decree praises Ptolemy for his support of the temples and lists the good deeds he has done for them. It also mentions his dedication to religion, including building a tomb for Alexander the Great and declaring him a god.
This inscription is important in Egyptology because it provided the key to deciphering hieroglyphics. The Greek inscription on the Rosetta Stone allowed scholars in the 19th century to understand the meaning of the hieroglyphic and demotic inscriptions.