ANSWER: RELATED TO TASK DIFFICULTY.
EXPLANATION:
Psychologically, OPTIMAL AROUSAL refers to the level of mental stimulation which results to full maximization of learning process, physical performance (such as seen in athletes) or proper wellbeing.
However, research has established that different levels of arousal is generated for different tasks to get optimal performance. It was also established by researchers of this context that lower or optimal level of arousal is generated for difficult tasks to ensue better concentration. In the other hand, tasks with less intellectual demands generates higher levels of arousal in other to increase motivation.
I think the answer should be B) because it is the most suitable answer. EU allowed easy traveling between EU countries.
others doesn't fit because:
A) tae kwon do came from Korea when this country is not even from Europe
C) you are allowed to speak those languages whenever you want to, it doesn't matter are you in the EU or not
D) Pakistan and China again are not in Europe
Answer:
The above statement is true.
Explanation:
In the English language, the word slack generally means to reduce speed or to become negligent towards a particular project or action. It refers to something weak, low, slow or careless. I means that something s not happening in the proper way that it should.
Hence the statement 'lack is the amount of time an activity can be delayed without delaying the entire project. ' is true.