Answer: b)because near-critical paths could become critical paths with small delays in these activities
Explanation: Program evaluation and review technique(PERT) technique is used for management of the project .The organizing, maintenance,coordination of any task is done by this chart. The non-critical activities need to be observed carefully because they may create near-critical methods which can lead to complexity.
Other options are incorrect because not all activities are equally rather monitoring is done to avoid errors and slack can occur at any path . Small delays can be caused but not complete project can get delayed and there can be risk of complexity rather than being uncompleted.Thus, the correct option is option(b).
 
        
             
        
        
        
Answer:
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Answer: TRUE 
Explanation: Composite is simply used to refer to the existence of more than one event or pattern. The composite primary key as related to database management query refers to the synergy or combination of more than one field or column of a specified table which is used in sorting or accurate identification of a record. When attributes are combined, that is more than one, it assists in narrowing down the returned records such that records which are close and exclusive to the options specified are returned. Usually, the more the number of columns which makes uo the case mpoaite keys, the more unique and well sorted our returned output is.