Final answer:
The statement 'A rectangle is a parallelogram' is correctly rewritten as a conditional statement as 'All rectangles are parallelograms'.
Step-by-step explanation:
When rewriting the statement A rectangle is a parallelogram as a conditional statement, we are forming a universal affirmative statement, which asserts that all members of one group are members of another group. This corresponds to the form 'All A are B'.
The correct conditional statement that represents this logical relationship would therefore be A) All rectangles are parallelograms. This is because every rectangle, by definition, has parallel opposite sides, which is a characteristic of parallelograms. Hence, rectangles are a subset of parallelograms, making the universal statement true.