If I were a bird I would fly high in the sky.a.Simpleb.Compoundc.Complex Compoundd.Complex

To determine the type of sentence, we need to analyze the structure and components of the sentence.

The given sentence is: "If I were a bird I would fly high in the sky."

Step 1: Identify the main clause(s) The main clause in this sentence is "I would fly high in the sky."

Step 2: Identify any subordinate clause(s) The subordinate clause in this sentence is "If I were a bird."

Step 3: Determine the type of sentence Based on the analysis, the sentence can be classified as a complex sentence. It consists of one main clause and one subordinate clause.

Therefore, the correct answer is d. Complex.