Answer:
The correct option is A
Step-by-step explanation:
Subjective probability is the kind of probability in which the person or individual personal judgement is involved or its own experience related a particular outcome or result which is likely to occur. And it contains no calculations, only states the opinion and the past experience.
In this situation, Belinda grounded on his experience, believes that campaign has 75% chance for increasing the product brand recognition. So, this is a Subjective probability method.