3. Speaker doesn't think that using gadgets a lot is a great idea.

В тексте "Script" указано: "But I think that using gadgets a lot is not always a good idea. If you spend too much time online, you have no time left for real communication. Meeting your friends, going for a walk in the park—nothing can replace it."

Следовательно, speaker 1 не считает, что использование гаджетов в большом количестве - это отличная идея.

Ответ: doesn't think that using gadgets a lot is a great idea.