The principal part in which the given verb is formed is option C. past. The action word "chewed" comes from its base word "chew". And to make it into a past form, the suffix -ed is added. The action word "chew" is an example of a regular verb. Regular verbs are verbs that only needs the suffix -ed in order to create a past form of the verb.
B. signification . because that is based on past experiences or associations.
Its like a heads up, let you know before hand.
