Suppose That the Class Mystery Is Derived from the Class

question 4

Multiple Choice

Suppose that the class Mystery is derived from the class Secret. Consider the following statements.Secret mySecret = new Secret() ;
Secret secRef;Mystery myMystery = new Mystery() ;
Mystery mysRef;secRef = myMystery;Which of the following statements is legal in Java?
(i) mysRef = (Mystery) mySecret;
(ii) mysRef = (Mystery) secRef;

• A) Only (i)
• B) Only (ii)
• C) Both (i) and (ii)
• D) None of these

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Definitions:

External Validity

How broadly a study's conclusions can be extended to various scenarios and populations.

Artificial Atmosphere

A man-made environment that replicates the conditions of a natural atmosphere, often used in space exploration or controlled scientific experiments.

Laboratory Experiments

Controlled tests or investigations conducted in a lab setting where variables are closely controlled to explore scientific processes or effects.

Internal Validity

The extent to which a research study can demonstrate that a causal relationship exists between the independent and dependent variables, free from confounding variables.