The Rebounder: A Fun Way to Exercise! From little babies to older kids and even adults, people love the feeling of bouncing. As it turns out, bouncing is not only enjoyable, but it also provides health benefits for people. it helps to build and maintain bone strength. That is one reason why using a "rebounder," which resembles a mini trampoline, is recommended by so many doctors and physical therapists.
Rebounding is a healthy exercise with fewer risks than other activities. Jogging on hard surfaces, for example, puts strain on the ankles or knees. Rebounding is gentle on the joints. Moreover, rebounding can be done every day, rain or shine, and people who rebound do not have to deal with traffic or stray dogs. Anyone can bounce in the comfort of his or her home. Rebounders are inexpensive and can usually be found at sporting goods stores.
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Read the following sentence from the passage.

Anyone can bounce in the comfort of his or her home.

Which linking word or phrase best begins this sentence?
A.
Sometimes,
B.
Best of all,
C.
Therefore,
D.
To illustrate,