Answer:
A complex sentence is an independent clause (a sentence that can stand on its own) with 1 or more dependent clauses added (dependent clauses can't stand on their own as a sentence).
Explanation:
Answer: 1 independent clause and 1 dependent clause and subordinating conjunctions
Explanation:
When it is about to rain, put on a raincoat.
When: subordinating conjunction
When it is about to rain,: dependent clause
Put on a raincoat: independent clause