The paragraph below contains irrelevant sentences. Look at the initial sentence in each paragraph to see what the focus of that paragraph should be and identify the irrelevant sentences. ( ) Newspaper crosswords are becoming increasingly popular. a) There is good evidence that doing crosswords helps you to avoid mental degeneration in later life. b) Newspaper sales have been in decline for several years. c) Many editors blame the increase in television news for the decline in sales. d) Tests with retirees who regularly complete crosswords have shown higher levels of the chemicals associated with mental alertness. e) The participants in the survey reported feeling more alert and interested in life than a control group who did not do crosswords. f) All the participants agreed that The Sun is an awful paper.