B. False. Por and para are two distinct Spanish prepositions, and they are not always interchangeable.
When the terms are used
Each has specific uses and contexts in which it is more appropriate. While there are situations where they can both be translated as "for" in English, their usage varies.
Por is often used for expressing reasons, motivations, durations, exchanges, means, and more. It is also used in idiomatic expressions.
Para is commonly used to indicate purpose, destination, recipients, deadlines, and opinions.