What is brand safety?

Brand safety refers to the measures and practices brands implement to protect their reputation and image by ensuring their ads do not appear alongside inappropriate, offensive, or harmful content. This involves careful contextual alignment to prevent negative associations. Option A describes an ad measurement tool, not brand safety itself. Option C describes a sentiment analysis framework, which is related to brand perception but not the core definition of brand safety. Option D is too narrow; brand safety applies broadly across digital advertising, not just livestreaming, and it's about protecting the brand, not just content moderation.