The correct answer is 3. Internet Authority Association (IAA), because it is not a real style of citation. Others are existent and commonly used whereas IAA is not real.
The point of view of Edgar Allan Poe's short story "The Black Cat" is a central, first person narrator. It is also omniscient (knows everything) and subjective (speaks from his own criteria, experience, or context).
The infinitive phrase in this sentence is to speak clearly, and it is used as a subject of the sentence. What/who is essential to being understood? To speak clearly.
Answer:
often is the right answer
