"Technology and the internet allow people to share experiencies, news, and information almost instantly, bringing young people closer together than ever before."
Explanation:
This statement is the most effective one since the verb "allow" is not modified by any adjective or adverb, suggesting the certainty of the stamentent. Moreover, it backs up the main statement with other ideas.
The other statements are not effective because they lack the above mentioned characteristics.
The first statement doesn´t include other ideas to justify the main statement.
The second option includes the expression "there are many reasons technology and the internet have <u>generally</u> brought tohether..." the word "generally" suggests that there are exceptions, this makes this statement lack effectiveness.
