The electrode is being as you weld with it?

Consumed i believe is your answer.

Explanation:

An electrode is a coated metal wire. It is made of materials similar to the metal being welded. ... In shield metal arc welding (SMAW) also known as stick, electrodes are consumable, which means that the electrode is consumed during its use and melts with the weld.

d. stage 4

explanation:

the existence of some kind of demographic transition is widely accepted in the social sciences because of the well-established historical correlation linking dropping fertility to social and economic development.[1] scholars debate whether industrialization and higher incomes lead to lower population, or whether lower populations lead to industrialization and higher incomes. scholars also debate to what extent various proposed and sometimes inter-related factors such as higher per capita income,lower mortality, old-age security, and rise of demand for human capital are involved.[2]