Which of these fungi is poisonous?

Answer: Option A

Amanita fungi are poisonous among all the given options.
The more poisonous fungi often have appropriately evocative names such as Satan's bolete, yellow sickener, the deadly fiber cap, beechwood sickener, funeral bell, fools mushroom, and false morel.
Amanita muscaria is a highly poisonous mushroom; the primary effects usually involve the central nervous system, and in severe poisoning, symptoms may manifest in coma and rare cases lead to death.