Arguments, Validity, and Soundness

Which of the following kinds of sentences have a truth-value?

Statements (for example, "The cat is on the mat.")

Which of the following statements correctly describes a valid argument?

If the premises are true, then the conclusion must be true.

Which of the following statements is true?

Valid arguments with all true premises are sound and all sound arguments are valid.

Which of the following can be logically valid or invalid?

Arguments

Which of the following can be sound or unsound?

Arguments

What are the necessary conditions for a sound argument?

All the premises are true and the argument is logically valid

Logic is the discipline that studies

The inferential relationship between premises and conclusions.

Consider the following argument: If George Washington was the first President, then he was an astronaut. Washington was the first President. Therefore, Washington was an astronaut.

Check all that apply.

This argument is valid

Consider the following argument: All U.S. Presidents are Commander in Chief of the Armed Forces. George Washington was a U.S. President. Therefore, Washington was Commander in Chief of the Armed Forces.

Check all that apply.

This argument is sound and valid

Consider the following argument: All U.S. Presidents are Commander in Chief of the Armed Forces. George Washington was a Virginian. Therefore, Washington was Commander in Chief of the Armed Forces.

Check all that apply.

This argument is invalid