Choose the best option to complete each of the following sentences
My grandfather and my sister often disagree about many things, which often leads to the________between them.

Generation gap can be seen in an establishment, a company or even in a group of people. It exists, in families, as the gap between parents and children. The core reason is the large difference in their age. Modern and busy society often makes it hard for parents to have time for their children, which has made the existing generation gap become larger. Bridging generation gap requires effort from both sides. On the one hand, parents need updated information about children’s life, study, entertainment and hobbies to understand and share the view with them. On the other hand, the children should be aware of the inevitable differences brought by age difference. When there is a conflict, both sides should discuss frankly to find out the solution. This could also allow both sides to understand each other better. Moreover, it makes children become more open-minded, share with parent their problems, and solve them with the help from the parents. It can also help avoid unnecessary stress, and family members can live harmoniously together with better working and studying achievement