Public health will improve more quickly in the wake of new medical discoveries if medical researchers abandon their practice of waiting until their findings are published in peer-reviewed journals before informing the press of important research results. This is because the public release of new medical information allows people to use that information in order to improve their health, but the peer-review process is unavoidably very slow. Which one of the following is an assumption on which the argument depends? ['People would use new medical information even if it were not first published in peer-reviewed journals.', 'New medical information that is first published in peer-reviewed journals does not usually receive public attention.', 'The peer-review process could be speeded up enough to produce a significant improvement in public health.', 'Reviewers for many medical journals are not themselves medical researchers.']