Which of the following characteristics leads to an upward-sloping supply curve?

1.increasing opportunity costs
2.increasing marginal costs
3.diminishing marginal utility
4.a decrease in factor prices
5.an increase in factor prices
6.increasing labor productivity

Robert just found out that he is going to be unemployed within a month because his factory has invested in a robotic factory line and his skills are no longer needed. this means that robert is . the gdp within country d has begun to decline. as a result of decreased production, thomas lost his job designing cars. this means that thomas is . raquel has just been offered a job, but she has decided not to take it because she feels her skills merit better pay and a better position. this means that raquel is .