What is the feature labeled "A" in the diagram below? Also,how did it form? 
Definitions:
Connector Division
A segment or department within a company that specializes in producing connectors, often seen in electronics and manufacturing firms, aiming to enhance operational efficiency and product specialization.
Minimal Acceptable
The lowest standard or level that is considered satisfactory or acceptable.
Special Sensors
Custom or unique sensors designed for specific applications or environments, often used in advanced manufacturing, robotics, or environmental monitoring.
Sensor Division
A business unit within a company focused on the development, production, and sale of sensors, which are devices that detect and respond to changes in an environment.
Q15: Which of the following is not a
Q20: Very fine-grained iron oxide particles account for
Q21: Many metals are extracted from ores that
Q23: Subduction zones are downgoing convection cells in
Q37: Why is the Moment magnitude scale favored
Q72: Sheeting is mainly a process of mechanical
Q82: Coal beds originate in _.<br>A)shallow lakes in
Q85: Which convection model suggests "sluggish flow" in
Q104: When electrons are shared amongst all atoms,the
Q185: To understand humans,one needs only to know