What is a system in which a government controls all economic activity in a country and its colonies?

Which of the following expresses a central idea of the article “are our phones making us zombies? ”

In 12 angry men the jurors decide that the women could see as far as she could

Coming to school each day, having the necessary materials, and to do homework students to be successful in school. choose the answer that is the most effective substitute for the underlined part of the sentence. if no substitute is necessary, choose ‘leave as is.’ a) leave as is. b) coming to school each day, have the necessary materials, and do homework c) come to school each day, having the necessary materials, and to do homework d) coming to school each day, having the necessary materials, and doing homework