The Wedding Dress: In many countries, it is customary for the bride to wear a white dress as a symbol of purity. The tradition of wearing a special white dress only for the wedding ceremony started around 150 years ago. Before that most women could not afford to buy a dress that they wear once. Now, bridal dresses can be bought in a variety of styles. 

the word customary is closest in meaning to____

A.normal          B.common              C.strange                     D.natural

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