Answer:
Compound sentence
Step-by-step explanation:
It has to parts, but the second one can't stand on its own and make sense, so Its dependent.
'A dog might signal the whistle of a tea kettle' or 'the beep of a microwave oven.'
A simple sentence is one independent clause, meaning it can sand on its own and make sense.
A compound sentence is one independent clause and one dependent clause linked by a conjunction.
A complex sentence is two independent clauses linked by a conjunction.