Answer:
$5
Step-by-step explanation:
In economics, marginal willingness to pay (MWTP) refers to the amount of money that a consumer is willing to pay for purchasing or consuming a specific product or service. E.g. how much are consumers willing to pay for a higher trim on a car instead of the base model.
Optimally, the MWTP should equal the value given to the product or service offered. In this case, Daniella values the public good at $5, so the community's MWTP should equal $5.