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Which statement about symbolic constants is true?

a) They make programs run faster. b) They always make programs clearer. c) They make it more difficult to modify programs. d) Using meaningful names for symbolic constants helps make programs more self-documenting.

Answer the following statements true (T) or false (F)

1) Screen readers have no problem reading and translating images. 2) When writing pages for the general public, it is important to consider the reading difficulty level of the text. 3) The tag helps screen readers describe images in a Web page. 4) Left-handed people have been helped by the improvements made in speech-recognition technology more than any other group of people.