Correct answer is (c) Comment line after function
To explain I would say: When we have many functions nested in a primary function, it is a good practice to place comment lines which would help anybody to understand the purpose of the function- making the function more versatile. This comment line introduced right after the function definition is treated as H1 line. All other comment lines after or preceding the function definition won’t be returned as H1 line when the H1 line is sought in MATLAB.