When a middle-school student is able to demonstrate that he or she is able to hear a string of digits (1, 2, 3, 4, etc.) and then repeat the string in reverse order, the child is indicating that he or she is developing

The answer is working memory.

Explanation:

Working memory is responsible for storing short-term information that can be manipulated, unlike simple short-term memory, which only stores information for retrieval.

Working memory has been linked with attention, as it mainly involves focusing on the relevant task and ignoring distractions.

all cities have a governor

all cities are in states or provnies then country

all cities have people

difference

some are rich

some are poor

some are average