Which of the following salts is stable to heat?

Silver nitrate (AgNO₃) is the salt that is stable to heat. Stability to heat refers to a salt's ability to resist decomposition or breakdown when exposed to high temperatures. Silver nitrate is a relatively stable salt that does not decompose easily even when exposed to high heat. This property makes it useful in various industrial and laboratory applications that involve heating, such as in the production of photographic film. In contrast, potassium carbonate (K ₂CO ₃), ammonium sulfate ((NH ₄) ₂SO ₄), and sodium bicarbonate (NaHCO₃) are not as stable to heat and may decompose or break down when exposed to high temperatures.