Answer:
Option a. The visuospatial sketchpad and the phonological loop each angle one task
Explanation:
The task is easier to handle if the work is held together in the two work areas. This enables a person to work much faster and also more efficiently. The visuospatial sketchpad and the phonological loop each angle one task. Placing these at such an orientation allows the work to be done much faster. 
 
        
                    
             
        
        
        
Remove the yellow leaves as they can spread to the other leaves
        
                    
             
        
        
        
Answer: B. Integration 
Explanation: The integration phase could be explained as the period whereby a designed solution, training or remedy is being tested in other to determine the effectiveness of the process. It marks an integral step toward the actual implementation of the process whereby the level of effectiveness is monitored and flaws are detected, meaning this phase is aimed at determining if the proferred solution work as planned. This phase opens way for modification where necessary before the actual implementation and validation phase. 
 
        
             
        
        
        
Answer:
the spread of Islam
Explanation:
The spread of Islam at times created tensions between the populations already living in North Africa and West Africa and the Muslim groups who were coming into the area. Some of these Muslim groups started wars against the natives, whom they viewed as godless pagans.