If a person works alone and performs tasks that nobody sees, even when he or she has high levels of expert and referent power, his or her ability to influence others is greatly reduced

Looking into the machine productivity only, is an example of multifactor productivity.

Indicate whether the statement is true or false.

When considering ________, accumulated evidence from several investigations increases our confidence that a causal relationship exists

A) the time order of occurrence of variables B) the role of evidence C) concomitant variation D) the elimination of other possible factors