The answer is A: repairing. None of the other answers give the reader the idea that Nelson is in fact skilled at his hobby.
"Repairing" would be the most appropriate choice to replace "tinkering", this would indicate that he is skilled at his hobby.
The technological advancement implies that scientists are working day and night. This is a sentence containing implies.
Which of the following implies that an idea is absolutely true? belief hypothesis theory law
Her reaction implies that she was not happy with the news.
No
The narrator implies that Miss Emily's father tended to do all of the following except showing her love and affection.
The word "following" implies the existence of a list. No such list is given.
Go now! (it implies understanding)
"Stay Alive."
5.000
It implies that most of the boys are following both soccer and basketball.
That question implies a fact not demonstrated.