Answer:
The type of sentence is complex.
Explanation:
We have a complex sentence when we join an independent clause and a dependent/subordinate clause. The subordinate clause is introduced by a subordinating conjunction, and it needs the independent clause to give it context. That is, the dependent clause does not make sense without the independent one. That is what we have in "She decided to take her brother's key because she wasn't sure when she would be back." Let's break it down:
1. She decided to take her brother's key --> independent clause; expresses a complete thought on its own.
2. because she wasn't sure when she would be back --> subordinate clause; introduced by the conjunction "because"; does not make sense on its own.
Answer:
complex
Explanation:
had this in school and got it right
thank me later
