context: One of the most important elements of Sonic games are the golden rings. They serve as protection against enemies, and when collecting 100 pieces gives extra life. If Sonic is damaged, then he will lose all the rings, and without them, when the attack is repeated, the character may die [6] [4]. The rings that fell during the attack can be collected, but not more than 20 pieces and for a limited time, since these rings will soon disappear. On levels bonuses stored in special monitors are also scattered - for example, temporary invulnerability or one extra life [7].
question: What are the gold rings in Sonic the Hedgehog?
answers.text: protection against enemies, and when collecting 100 pieces gives extra life