Final answer:
Word-of-mouth is considered the best form of advertising as it relies on personal recommendations from satisfied customers to build credibility and trust. It is based on authentic experiences and opinions, making it a powerful and trusted advertising tool. Option a is correct.
Step-by-step explanation:
Word-of-mouth is considered the best form of advertising. It relies on the personal recommendations of satisfied customers to spread awareness and build credibility for a product or service. When people hear positive reviews from friends or family members, they are more likely to trust and try the advertised offering.
For example, if a person is looking for a new restaurant to try, they may ask their friends for recommendations. If several friends recommend the same restaurant because they have had enjoyable dining experiences there, it is highly likely that the person will try the restaurant based on these word-of-mouth referrals.
Unlike other forms of advertising, word-of-mouth does not involve paid promotions and is based on authentic experiences and opinions. This makes it a powerful and trusted advertising tool that can have a significant impact on consumer behaviour.