Communication satellites are most effective when placed in __________ orbit so they appear to remain in a constant position above the earth

A single media company needs to make 2 versions of its content available—

a. one for broadcast and one for broadband. b. one in High Definition and one in regular definition. c. one for a regular screen and one for a cluttered screen. d. one with ads and one without.

Social exchange theory suggests that people __________.

Fill in the blank(s) with correct word