The correct answer is: C. low barrier to entry
A pay-as-you-go model matches resources to need on an ongoing basis. This means that businesses only pay for the resources they use, and they can scale their usage up or down as needed. This can be a very cost-effective way to operate, as it avoids the need to make large upfront investments in resources that may not be fully utilized.
A low barrier to entry means that it is relatively easy for businesses to start using a pay-as-you-go model. This is because there are typically no long-term contracts or commitments required. This can make pay-as-you-go a very attractive option for businesses that are looking for a flexible and cost-effective way to manage their resources.
The other options, utility and elasticity, are not relevant to the question. Utility is a measure of how useful something is, and elasticity is a measure of how responsive something is to changes in price. These concepts are not relevant to the question of whether or not a pay-as-you-go model matches resources to need on an ongoing basis.