Final answer:
The correct etiquette for serving and eating a dinner roll is to break off and butter small pieces one at a time, using the bread plate to your left.
Step-by-step explanation:
The proper etiquette when serving and eating a room temperature dinner roll is to break off and butter the bread in small one to two bite pieces. This means that option B, "Break off and butter bread in small one to two bite pieces," is the correct answer. Breaking the bread helps to avoid mess and shows consideration for table manners. The bread plate to use is the one to your left, not to your right, thus option D is incorrect. It is also considered more polite and manageable to butter only the piece you are about to eat.