Depending on the type of file, it normally runs or opens.
Answer:
cause
Explanation:
According to my research, I can say that based on the information provided within the question this is an example of a "cause". This refers to something that makes something else happen, and is usually stated by the word "because". For example in this situation the a "planned increase in the use of the computer by operating departments" caused a "Competition for computer time during periods of high demand to become intense".
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