Which of these is a legitimate form of life insurance advertisement?

Paid celebrity endorsements are a legitimate form of life insurance advertisement because they are generally considered an acceptable marketing practice when executed transparently and responsibly. These endorsements leverage the popularity or trustworthiness of a celebrity to promote a life insurance product. The use of a well-known figure can capture consumer attention and lend credibility to the insurer's offerings, provided that the advertisement adheres to ethical marketing standards and does not mislead consumers about the product.

In contrast, other forms mentioned do not align with the industry’s best practices or regulatory guidelines. Unsolicited cold calls are often viewed as intrusive and can lead to consumer distrust. Guaranteed approval for all applicants can raise ethical concerns and may not actually reflect the underwriting requirements of life insurance policies, potentially misleading consumers. High-pressure sales tactics can create an uncomfortable experience for potential buyers and are generally discouraged as they may lead to consumers making hurried decisions without fully understanding the product. These practices are not only unethical but can also be legally questionable within the industry.