Answer: Option (A)
Step-by-step explanation:
Here, in this particular case the ad's source are believing that their message will benefit from the primacy effect. The ad organization is using the primacy effect, so as to have their customers commemorate the first section or piece of the information they come across better than the information which is further presented at the later stage.
Here in this case the Charlotte BB cream is putting forth the prime message , i.e. the cream is good for sensitive skin and is tested by dermatologist and later rest of the message continues.