Echoic memory and iconic memory are a part of the memory.
a. sensory
b. long-term
c. context
d. short-term

The answer is letter A.

Both echoic and iconic memories are part of the sensory memory. Sensory memory refers to an individual’s ability to retain impression of sensory information for a brief time after the original stimulus has ceased. It is an automatic response that is considered to be outside of cognitive control. Iconic and Echoic memories are types of sensory memories. Iconic memories are inputs to the visual systems that last for a duration of 100 milliseconds; while echoic memories are inputs to the auditory system that can only hold information for about 3-4 seconds.

Your answer is  d.)relationship between pressure and air volume and led to the understanding of how respiration works