Answer:
The correct answer would be Visual Stimulation, Auditory Stimulation.
Iconic memory is to echoic memory as Visual Stimulation is to Auditory Stimulation.
Explanation:
Iconic Memory is the Visual Sensory Memory. It is totally concerned with the Visual Memory System. Whereas The Echoic Memory is referred to as the Auditory Memory. It is the part of Sensory Memory and deals all types of memories concerning sounds or audios.
So when we talk about Iconic Memory, it means we are talking about Visual Stimulation and when we talk about echoic memory, it means we are talking about the Auditory Stimulation.