Under the influence of morphine, thought, feeling, and perception can become altered. Morphine is a powerful opioid pain medication that affects the central nervous system.

Option 1: Tranquilizers are medications used to reduce anxiety and promote relaxation. While they can have calming effects, they are not known for significantly altering thought, feeling, and perception like morphine does.

Option 2: Hashish is a form of cannabis that contains high levels of THC, the psychoactive compound. While it can produce a range of effects on thought, feeling, and perception, it is not specifically known for the same level of alteration as morphine.

Option 4: Amphetamines are stimulant drugs that can increase alertness and focus. While they can influence thought and perception, they generally do not have the same impact on altering thought, feeling, and perception as morphine.

Overall, while all of the options can have effects on thought, feeling, and perception, morphine is specifically known for producing significant alterations in these areas when under its influence.