No, there are no suffixes in the word pedal.
A simple subject is the thing doing the verb, but excluding any extra details about the subject.
In this case, the subjects would be “men and melons”.
A simple predicate is just the verb, instead of the entire verb phrase.
In this case, the verb would be “are”.
I think it would be "To identify what the author wants readers to do with the information in the article."
