A study found that the bones of women who drink beer regularly are stronger, ________ them less likely to suffer from osteoporosis, a disease of bone that leads to an increased risk of fracture．

1. A.
   to make
2. B.
   make
3. C.
   made
4. D.
   making

 A study found that the bones of women who drink beer

regularly are stronger, _____them less likely to suffer from osteoporosis, a disease of bone that leads to an

increased risk of fracture.

A. to make      B. make     C. made    D. making