AARP provides a number of benefits for elderly people so that they obtain economic security.
Explanation:
Elderly people face the pressure of adjusting their means of life to inflation, health expenses, financial security and rising taxes. These issues, mostly economic, are measured by the 'anxiety index' which basically says that elderly people worry about the above mentioned issues because they want retirement security. The AARP provides a number of benefits for the elderly, including medicare, vehicle, entertainment and travel discounts, amongst others. These benefits might alleviate significantly the economic issues and thus help reduce their anxiety levels.
I believe the answer is D) the invasion of Dorking by a German-speaking army. “The Battle of Dorking” was a short story by Chesney that explored a future war genre. H.G. Wells then developed this template of writing.