I think false. I am not sure
Explanation:
Development occurs in many types depends upon how u want it to develop and how you helping in it to develop it more easily. As per the psychologists (Developmental psychologists), the development of an individual or child occurs in a orderly or sequential way and in different areas simultaneously.
Answer:
Warm air rises at the equator and cold air sinks at the poles.
Least developed countries (LDC) have hard time connecting with other countries and therefore struggles a lot.
I'd say listen to her then go back to work.