Which factor might cause an increase in the supply of a product?

Since there isn't a list to choose from I will list several:

1. If costs to produce a product increases then the price will increase, less consumers will purchase it so a increase in supply will be the result.-cost of input

2. If workers to producemore, then supply will increase. - productivity

3. new technology, such as the DVD player, caused an increase supply of VHS players because consumers want the newest technology

4. an increase in taxes will result in less consumers purchasing the product so supply will increase

5. a government payment to protect an industry will cause an increase in production. - subsidies

6. If a producer expects a product to be in demand, they will increase production.

7. Government regulations. Government may deem a product unsafe.

8.