Answer:
b. There is a fall in the wages paid to workers that grow roses.
Explanation:
A shift to the right in the supply curve means that the supply of roses increased the quantity of roses at the same price. This is only possible is a change in the cost structured improved the capacity of production of roses at the same use of resources. With a fall in salaries of workers is possible to hire more workers and increase the offer of total roses at a same level of previous cost