Atlas industries combines the smaller investment proposals from each operational unit into a single project for planning purposes. This process is referred to

Aggregation

Explanation:

 The aggregation process is one of the method that helps in gathering or collecting the data into the form of summarized form that is for the statistical analysis purpose based on the different types of functions.

According to the given question, the Atlas is one the industry that helps in combine the proposal of the small investment for the planning purpose in the given operational unit. This process is known as the aggregation.  

Therefore, Aggregation is the correct answer.  

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