Which Object (If Any)is a Star in the Sense That

question 180

Multiple Choice

Which object (if any) is a star in the sense that its main source of energy is nuclear fusion?

• A) a T Tauri star
• B) a sub-brown dwarf
• C) a brown dwarf
• D) None of these has nuclear fusion as its main energy source.

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Definitions:

Independent Variable

In an experiment, the variable that is manipulated or altered to observe its effect on the dependent variable.

Confound

To cause confusion by mixing up or failing to distinguish between different elements or variables.

Masked Variable

A variable that influences a study's outcome indirectly by affecting other variables, not easily identifiable.

Placebo

A substance with no therapeutic effect, used as a control in testing new drugs or used to induce psychological benefits purely through belief.