A is a tool used in structured systems analysis and design (SSAD) analysis model that shows a process at a more general level and is helpful for showing top management and the task force how a process works.

Context diagram            

Explanation:

  The context diagram is one of the type of engineering tool which is specifically used for defining the boundaries of the parts in the system.

 The context diagram is one of the block diagram type and it also include various types of eternal entities such as company group, data stores and the system.

 According to the given question, the context diagram is basically used in the structured system analysis and designing model for analyzing the management process.        

 Therefore, Context diagram is the correct answer.   

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'

answer; the above statement/question is ( true);