Final answer:
Morphine, cocaine, and heroin are all physically addictive drugs, with morphine and heroin being opioids and cocaine being a stimulant, thus the correct answer is (D) All of these.
Step-by-step explanation:
The drugs morphine, cocaine, and heroin all have the potential to be physically addictive.
Morphine and heroin are both derived from the opium poppy, and they act as potent painkillers.
Morphine, specifically, is often used in medical settings for severe pain relief but is strongly addictive and can lead to physical dependence with potential withdrawal symptoms such as pain and tremors upon cessation.
Heroin, an illegal drug and a derivative of morphine, is known for its highly addictive properties and is often abused for its euphoric effects.
Cocaine, although not an opioid, is a powerful and addictive stimulant that can result in both physical and psychological dependence.
Therefore, the correct answer to which of the following drugs are physically addictive would be (D) All of these.