Question

1. is the following argument valid?

• all squares are rhombuses.
• all rhombuses are parallelograms.
• therefore, all squares are parallelograms.

valid. a not valid. b

Explanation:

To determine if the argument is valid, we use the transitive property of logical implications. If all squares (S) are rhombuses (R) (S ⊂ R) and all rhombuses are parallelograms (P) (R ⊂ P), then by transitivity, all squares must be parallelograms (S ⊂ P). This follows the structure of a valid syllogism.

Answer:

A. Valid.