Answer:
A. Xcode libraries
Explanation:
We have to find a requirement for developing game applications on devices running Apple’s iOS operating system. For that, I will evaluate each answer.
A. Xcode libraries
Xcode can be generally defined as a development kit or integrated development environment to facilitate the Apple software development. Apple use iOS operating system for its devices. To develop anything compatible with iOS, you generally have to code it using Xcode. Obviously, each development kit includes libraries for project to be built. Therefore, this option is correct.   
B. Android Development Kit
Just like Xcode, Android Development Kit is used to build the software for android. It is pretty much comprehensible from its name. So,  this option is false.    
C. ARM technology  and D. advanced microprocessors
These both options are related to hardware and available on both the devices. It is used for overall processing but these options are not that relevant to iOS operating system. Therefore, these options are false too.
So, Correct option is Xcode libraries.
 
        
                    
             
        
        
        
Physical activity could help reduce the chance ofheart disease
        
                    
             
        
        
        
Answer:
try powering it off the turn it back on
Explanation:
 
        
                    
             
        
        
        
Answer:
import random
randomlist = []
for i in range(0,20):
 n = random.randint(-29,30)
 if n < 0 :
 n = 100
 randomlist.append(n)
print(randomlist)
Explanation:
The random module is first imported as it takes care of random. Number generation. 
An empty list called randomliay is created to hold the generated random integers. 
Using a for loop, we specify the range of random numbers we want. 
Inside the for loop ; we attach our generated random integer which will be in the range (-29 to 30) in a variable n
For each n value generated, if the value is less than 0( it is negative, since all the values are integers), replace the value with 100.