Answer:
C. Rick and Kate built the house with their own hands.
Step-by-step explanation:
An active voice is opposite from the passive voice. In this example, the subjects are Rick and Kate and they are doing the action. The verb is to built and refers to active because the subjects are performing an action on object. The object in this example is house. This example is in active voice because there are all elements needed for the acting and can be transformed into passive voice.