Which of the Following Statements Does NOT Describe One of the Unusual

question 333

Multiple Choice

Which of the following statements does NOT describe one of the unusual characteristics of quasar 3C 273 that astronomers noticed when the quasar was first discovered?

• A) 3C 273 was a faint, starlike object that coincided with an intense radio source.
• B) A luminous jet protruded from one side.
• C) The object was ringed with multiple but identical images of a distant galaxy, suggesting gravitational lensing.
• D) The spectrum contained emission lines that could not be immediately identified.

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Definitions:

Psychological Process

Mental functions and mechanisms through which individuals perceive, think, and experience emotions.

Conditioned Stimulus

A neutral stimulus that triggers a conditioned response after being paired with an unconditioned stimulus.

Neutral Stimulus

An initially neutral stimulus that does not provoke an inherent response until it becomes associated with a naturally occurring stimulus.

Unconditioned Stimulus

In classical conditioning, a stimulus that naturally triggers a reflexive response without the need for prior learning.