Final answer:
The forest biome with a wet season and dry season, an open canopy, and adaptations for dry periods is known as the savanna.
Step-by-step explanation:
The forest biome described as seasonal, with a wet season and a dry season, an open canopy, and plants and animals adapted to long dry periods is known as the savanna. This type of biome is not characterized by the constant evergreen nature of tropical rainforests or the seasonal leaf loss associated with temperate deciduous forests or boreal forests; instead, it has its own periodicity, driven by a distinct wet season and dry season. Given the choices provided, the correct answer is d) Savanna.