Final answer:
The violations cited in the given list include the use of methamphetamine, crack cocaine, PCP, horse tranquilizers or heroin, acts of vandalism, and potentially hidden drug injection sites, all of which are considered violations due to substance abuse and illegal actions.
Step-by-step explanation:
In determining which behaviors are cited as violations in the provided list, we can consider substance use disorder, drug abuse, and illegal actions. The first option (a) includes the use of methamphetamine, crack cocaine, PCP (also known as angel dust), horse tranquilizers (often ketamine), and heroin, which are all substances with high abuse potential and significant legal consequences associated with their use. The use of these substances could lead to various health issues, including but not limited to addiction, psychological dependence, the risk of contracting diseases like tuberculosis and HIV, and overdose.
Option (b) mentions committing an act of vandalism which is a criminal offense and thus a violation. The third option (c) describes the use of single intradermal (hidden) sutures, which, in a medical context, is not inherently a violation, assuming it is done within the scope of legal and medical guidelines. However, in the context of injection drug use where paraphernalia may be concealed, it could raise concerns related to drug abuse. Taking into account the substance abuse and illegal actions presented, the correct answer would be d) All of the above, assuming the third option relates to the concealment of drug injection sites which is associated with drug abuse.