Final answer:
Bigfoot or Sasquatch is considered a cryptid because its existence is not scientifically proven but is suggested based on anecdotal sightings. It is not classified as a primate, a hoax, or a mythical creature, according to the scientific evidence available. The correct option is b.
Step-by-step explanation:
Bigfoot or Sasquatch is commonly referred to as a cryptid—a creature whose existence is suggested but not scientifically proven.
Cryptids fall into the field of cryptozoology, a pseudoscience that aims to study animals which people claim to have seen but for which there is no definitive evidence.
Given the options provided, Bigfoot is best described as a cryptid (b). The descriptions of Bigfoot are often inconsistent, and while some claim it could be a new kind of ape, there is no physical evidence to classify it as a primate.
Others believe the sightings could be misidentifications of known animals, such as bears on their hind legs. Skeptics, on the other hand, may refer to Bigfoot as a hoax (d), suggesting that sightings and evidence, like footprints, are fabricated.
Despite the mystery, Bigfoot does not align with the definition of a mythical creature (a), which is generally considered a being from folklore or legend, existing only in stories and not in the physical world.