Answer:
following are expression to this question:
s.upper()
Explanation:
Example to use upper method:
s= "McGraw15" #defining string variable that holds a value
print (s) #print value
print ('changing into upper case: ') #print message
print (s.upper()) # call upper method and print its value
Output:
McGraw15
changing into upper case:
MCGRAW15
Description of upper method: