Question

highlight the subordinating conjunction (\swabi\) in the sentence.
dr. doofenshmirtz dislikes tomatoes because he thinks they are slimy.

Explanation:

Subordinating conjunctions (like those in the "SWABI" mnemonic) introduce subordinate clauses. In the sentence, "because" introduces the clause explaining why Dr. Doofenshmirtz dislikes tomatoes, so it's the subordinating conjunction.

Answer:

because