Who can obtain authority to handle dangerous substances?

The correct option indicates that a wide range of entities can obtain authority to handle dangerous substances, which is crucial for ensuring appropriate access and safety in the management of these materials. In this context, dangerous substances typically refer to controlled substances or those that require careful handling due to their potential for abuse or harm.

Practitioners, including physicians and veterinarians, are allowed to handle dangerous substances as they need access to prescribe and administer these medications for patient care. Wholesalers and manufacturers are involved in the distribution and production of these substances, and therefore require authority to handle them in bulk. Pharmacists and pharmacies are also essential players, as they dispense medications directly to patients, ensuring that dangerous substances are managed responsibly.

Additionally, animal shelters may need access to dangerous substances for the health and welfare of the animals in their care, which reflects an understanding of the broader responsibilities in public health and veterinary care. By including all these entities, the answer acknowledges the complexity of the healthcare system and the various roles that different professionals and organizations play in the handling of dangerous substances. Thus, the broad scope of the correct answer reflects regulatory practices designed to ensure that dangerous substances are managed by qualified individuals or entities, maintaining public safety and compliance with the law.