____________ the airlines,trucking,and long-distance phone calling has led to lower prices for consumers.

A) Regulation of
B) Trusts in
C) Deregulation of
D) Conglomerates in

Deregulation

The process of converting a regulated firm or industry into an unregulated firm or industry.

Airlines

Companies that provide air transport services for traveling passengers and freight, playing a crucial role in global connectivity and commerce.

Trucking

The transportation of goods and products by large vehicles known as trucks, playing a crucial role in supply chain and logistics.