What is the central idea of this passage?

1. by a sculptora.ablative of agentb.ablative of means2. by a patrona.ablative of agentb.ablative of means3. by hammer and chisela.ablative of agentb.ablative of means4. by millions of art loversa.ablative of agentb.ablative of means5. by berninia.ablative of agentb.ablative of means

The purpose of antitrust law is to support efforts of companies to take over others discourage competition in certain markets force similar companies to combine into one protect competition by preventing monopolies

Select the statements (multiple) that represent ways in which audiovisuals can enhance oral presentations. select all that apply. increase listener comprehension communicate content reinforce key concepts hold audience attention