An individual’s self concept of being male or female
Answer:
A sphygomanometer gives a digital reading of blood pressure.
Answer: Gateway drugs
Explanation: Gateway drugs refers to the fact that the use of a psychoactive drug is associated with a greater probability of using more drugs. The theory about these drugs has been around for a long time. These drugs are easily accessible and may seem harmless to some extent, but they create addictions, leading the person to want to consume something stronger.
A is the answer I hope this helps