Answer:
b. increase
Step-by-step explanation:
These changes have caused competition to greatly increase. This is mainly because with these changes anyone from around the world can provide the same services/products that a local retail business can provide while reaching customers from all over the world. Therefore, also competing with any retail brick-and-mortar business from any part of the world. Customers can easily communicate with these online businesses and purchase their products/services from the comfort of their homes and usually at a much better price.