Welfare means well-being and with a minimum support.
General welfare is the concept that all people should have some basic quality of life (home, food, security).
In order to ensure this, there is often a "general welfare"clause in the constitution (US has it, but other countries too).
The answer for you question would be, Delayed Matching to Sample or simplified, (DMTS)
What???? provide a picture
Number 3 keeps the planets in orbit.
Answer:
A point on the curve
Explanation:
The production possibility frontier is a curve that shows the maximum output of two good that can be gotten if all resources available are fully and efficiently employed. Labour is one of such resources and all points on the PPF means that all resources are fully and efficiently utilized. Hence, labour like every other resource that is fully utilized will be on a point on the PPF.