Identify the sentence type: Though the garden was overgrown with weeds, the vibrant flowers still bloomed beautifully.

The sentence "Though the garden was overgrown with weeds, the vibrant flowers still bloomed beautifully." is a complex sentence.

Here's why:

1. A complex sentence is a sentence that contains one independent clause and at least one dependent clause.

2. An independent clause is a clause that can stand alone as a sentence, i.e., it expresses a complete thought. In this sentence, "the vibrant flowers still bloomed beautifully" is an independent clause because it can stand alone as a complete sentence.

3. A dependent clause is a clause that cannot stand alone as a complete sentence because it does not express a complete thought. In this sentence, "Though the garden was overgrown with weeds" is a dependent clause because it cannot stand alone as a complete sentence. It is dependent on the rest of the sentence to make sense.

4. The dependent clause "Though the garden was overgrown with weeds" is connected to the independent clause "the vibrant flowers still bloomed beautifully" to form a complex sentence.