Answer:
Simple subject - weathermen
Complete subject - the weathermen
Step-by-step explanation:
The subject of a sentence is what the sentence is about - the person, place, thing, or idea doing something or being described.
The simple subject is the main word or words that the sentence is about (not including any modifiers).
The complete subject consists of all of the words that the sentence is about, including all modifiers.
That's why the simple subject of the given sentence is weathermen (just the noun), while the weathermen is the complete subject (noun phrase - the + weathermen).