The Age of the Oldest Rocks That Have Been Dated

question 23

Multiple Choice

The age of the oldest rocks that have been dated is about

• A) 4 million years.
• B) 50 million years.
• C) 1 billion years.
• D) 4 billion years.

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Definitions:

Constructive Dilemma (CD)

A type of logical argument that presents two conditional statements and concludes that if one is true, then a specific outcome follows.

Modus Ponens (MP)

A form of argument in deductive reasoning that applies the following structure: if P then Q; P is asserted to be true, therefore Q must be true.

Modus Tollens (MT)

A logical form of argument that concludes the inverse of an antecedent from the negation of the consequent of a conditional statement.

Constructive Dilemma (CD)

A form of argument in which, from two conditional statements and the affirmation of their antecedents, one infers the affirmation of their consequents.