EO NO. 51 of 1986 regulates which of the following?

EO NO. 51 of 1986, also known as the Milk Code, specifically regulates the promotion and distribution of breastfeeding information. The main objective of this executive order is to protect and promote breastfeeding as the optimal method of infant feeding and to ensure that infants receive the necessary nutrients from breast milk.

The Milk Code aims to provide accurate information about breastfeeding, discourage aggressive marketing of infant formula, and regulate the distribution of materials that may undermine breastfeeding practices. This is significant because it addresses health concerns regarding artificial feeding and promotes the welfare of infants through educational and supportive measures related to breastfeeding.

The other options focus on areas that are not directly covered by EO NO. 51. For instance, while the sales and advertisements of infant toys, manufacturing of artificial milk formulas, and healthcare access for adults are important topics, they fall outside the specific scope and intent of the Milk Code, which centers on breastfeeding practices and the information surrounding them.