Final answer:
The relative clause in the sentence provided is 'that is dairy free,' which modifies the noun 'ice cream'. It acts similarly to an adjective, providing additional information about the ice cream being dairy free.
Step-by-step explanation:
The relative clause in the sentence 'Ice cream that is dairy free can be made from coconut milk.' is 'that is dairy free'. This clause is adding information about the ice cream, thereby modifying it. It begins with the relative pronoun 'that', which refers back to 'ice cream'. In this sentence, the relative clause functions as an 'adjective clause' because it is providing more details about a noun, similar to how an adjective would.
In comparison to example 2 from the provided reference: 'Janis spent her vacation in Goa, which is on the west coast of the Indian subcontinent.' Here, 'which' is the relative pronoun and 'which is on the west coast of the Indian subcontinent' is the relative clause that modifies 'Goa'.