Final answer:
The marketing strategy illustrated in this scenario is celebrity endorsement. It involves using a well-known individual to promote a product or brand.
Step-by-step explanation:
The marketing strategy illustrated in this scenario is celebrity endorsement. Celebrity endorsement involves using a well-known individual, in this case Julia, to promote a product or brand. By attending promotional events and being covered by the media, Julia is leveraging her favorable public image to enhance the reputation of the product or brand she is associated with.