Roberta is in her late 80s and recently has noticed that some letters or words seem to be missing when she reads the newspaper. based on this symptom, it is possible that roberta may suffer from

Macular Degeneration

Explanation:

Macular Degeneration is the issue that creates loss in vision which is supposed to be non-curable or low curable disease.It occurs due to issue in retina's central part which is known as macula. This can result in an individual's vision getting effected while reading or viewing something.

According to the question, Roberta might be experiencing macular degeneration disease in which the she is not able to properly see some words or letter that fall between the sentences.

the more fit you are, the faster the recovery. your heart rate drops most sharply in the first minute after you stop exercising; it should then fall about 20 beats a minute—a drop of less than 12 beats a minute is considered abnormal. this “recovery heart rate” is measured as part of an exercise stress test.