The correct answer is C.
An author's credentials can determine a health source's credibility. None of the other options would apply to credibility. When it comes to health, if you want to make sure that what you are researching or reading is authentic and reliable you need to find out whether the author is a professional health expert or not. You can do this by finding out their credentials.
A.
positive reinforcement.
Hope this helps, please mark brainliest.
One said: “On the whole the public view older people as a drain on society instead of an asset.” Another added: “Older people are mostly seen as a bundle of problems and service-needs. Their strengths, skills and knowledge are not harnessed or appreciated in a society infatuated by the cult of youth.”
In fact, older people in the UK contribute an estimated £61bn to the economythrough employment, volunteering and caring. And, according to Ros Altmann, the UK government’s champion for older workers, being 50, 60 or 70 in the 21st century is no longer a predictor of physical or mental abilities. It certainly does not signify that someone has failing health and will soon be unfit to work, or no longer able to learn new skills.
Meanwhile, with numbers of people aged 75 and over expected to double by 2040 and the proportion of older people in the UK due to rise from 23% to 28% of the population by 2030, it is vital to plan for the necessary services to support our ageing society.
