Which of the Following Is Correct

question 26

Multiple Choice

Which of the following is correct?

• A) X is a sufficient cause of Y if Y always happens when X is present
• B) Y is a necessary cause of X if Y always happens when X does
• C) X is a necessary cause of Y only if Y happens before X
• D) Y is a sufficient cause of X only if X happens before Y

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Definitions:

Pure Substances

Materials that are composed of only one type of atom or molecule, exhibiting consistent physical and chemical properties throughout the sample.

Uniform Composition

A characteristic of substances where the composition is consistent throughout the material, indicating a homogeneous mixture or pure substance.

Molecule

The smallest unit of a chemical compound that can exist, consisting of two or more atoms bonded together.

Atom

An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element, consisting of a nucleus surrounded by electrons.