________ is a social arrangement that encourages all participants to behave such that they do not contribute to the tragedy of the commons

Sending an email to congratulate a business acquaintance on the birth of her baby is ________

A) improper unless you have a close personal relationship B) tactless and a letter should be mailed instead C) inappropriate since it is in reference to an event in her personal life D) best done with direct organization E) most effective when it begins with supporting details and builds up to congratulating

Interactions within mobile social networks are currently limited to exchanging simple text messages on a one-to-one basis

Indicate whether the statement is true or false