The answer would be the first one because it sounds formal where as the other ones are less formal and sound as if you are talking to a friend
Answer: for example a younger sibling may have some firstborn characteristics
160 x 2 = 320 calories in 1 avocado. One dozen is twelve, so multiply 320 x 12 to get 3,840 calories.
Interactive elements is the answer! Hope this helps :))
