There are 3 possible answers of this question:
Match the YouTube customer with the Google Audience Signal type that helps advertisers connect with that customer.
1 Peoplewhofrequentfast-foodrestaurants
2 Peoplewho have recently gotten married
3 People who are searching reviews on lawn mowers
4 People who blog about hunting
Custom Affinity audiences (4)
In-Market audiences (3)
Consumer Patterns (1)
Life Event (2)
or
1 People who recently had a baby
2 People who are subscribed to channels about cars
3 People who frequent outdoor product stores
4 People who are searching for dog food on shopping sites
Life Event (1)
Custom Affinity audiences (2)
Consumer Patterns (3)
In-Market audiences (4)
or
1 People who read reviews on car stereos
2 People who frequently go on cruises
3 People who have recently retired
4 People who answer forum questions about horses
Custom Affinity audiences (4)
In-Market audiences (1)
Consumer Patterns (2)
Life Event (3)