He demonstrated the existence of radio waves: _________________

The fact that would be appropriate to use the "okay" sign (forming a circle with your thumb and

forefinger) in the U.S. but not appropriate in Tunisia is an example of differences in __________ rules between cultures. Fill in the blanks with correct word

Effective customer relations entail separating the issues from the emotions because rude customers may have legitimate complaints and only be expressing frustration

Indicate whether the statement is true or false