Choose the sentence that correctly uses commas.
a) Although more research is needed some people claim that eating chocolate
has important health benefits such as reducing the risk of cardiovascular
problems and lowering cholesterol.
b) Although more research is needed, some people claim that eating chocolate
has impoant health benefits such as, reducing the risk of cardiovascular
problems, and lowering cholesterol.
c) Although more research is needed, some people claim that eating chocolate
has important health benefits, such as reducing the risk of cardiovascular
problems and lowering cholesterol.
d) Although more research is needed, some people claim that eating chocolate
has important health benefits such as, reducing the risk of cardiovascular
problems and lowering cholesterol.