Research and fill in the blanks.
Nature & Purpose
-The pace of tennis can be adjusted, so multiple ages can play
-There are two types of matches (blank) or (blank)
-The court for a (blank)
match is (blank) feet wider than a single's match (4.5 allies on each
side)

Blood transfusions were rarely done and often fatal; they were outlawed until the nineteenth century.

(a) is not correct because one does not get increased cholesterol  from lifting weights.(b) is not correct because lifting weights cannot reduce the risk of a hereditary disease.(c) is not correct because back pain isn't a benefit! and plus, if he lifts weights properly, he should not have back pain.(d) is the correct answer because his ligaments will gain mass, making it easier for him to carry heavier weights and he will also be stronger!