Which condition leads to an increase in supply? a decrease in the cost of raw materials a change in the law of supply diminishing marginal returns an increase in the cost of raw materials

I believe the answer is a decrease in the cost of raw materials

Decrease in cost of raw materials led to the product becoming cheaper and attract more interest in the market.
This will lead to the sellers increasing their supply in order to obtain the maximum profit from the product.

Where are the choices?