Question

which statement describes a disadvantage of nonrenewable resources?
it is hard to collect large quantities of them at a time.
they are inconsistent or unreliable as an energy source.
they are expensive to collect and transform into energy.
it is difficult to change the habit of using the resource.

Explanation:

Non - renewable resources like fossil fuels often require complex and costly processes for extraction and conversion into usable energy forms such as oil refining or coal - to - electricity conversion. While some non - renewables can be collected in large quantities (e.g., coal mines), they are not inconsistent in the sense that their energy output is predictable when used. And the difficulty of changing usage habits is more of a social or economic issue rather than an inherent property of the resource.

Answer:

They are expensive to collect and transform into energy.