The first option is correct.
When will you be able to meet for lunch, Grandpa Henry?
The advice they gave was no fighting
Answer:
Answer is TONE.
Refer below.
Explanation:
When a tone is sounded, a baby's right cheek is touched, and the baby reflexively turns its head to the direction of the touch. After several pairings, the baby turns its head to the right as soon as it hears the tone. In this example, the conditioned stimulus is the TONE.