One disadvantage of hd radio is that

HD radio s also called High-Definition radio. It is free of charge because it is included in the cost of equipment purchase.  The equipment you need to buy is expensive and that is one disadvantage of HD Radio. Equipment price varies upwards up to $1000 each. 

there was no passage listed but using the process of elimination i'd say it was d. the high economy would do the opposite. i don't see how low prices would affect it. high unemployment is possible but i feel d is the better answer.

answerstop plates; security tracking of office property