based on user input, mapping "a" to "you chose the first option", "b" to "you chose the second option",
"c" to "you chose the third option", otherwise "invalid choice"

# getting user input
option = input ("Please enter a value for choice: ")

#verifying equality to "a"
if option == "a":
	# printing message
	print (“you choose the first option”) 
# equality to b
elif option == "b":
	# printing message
	print (“you choose the second  option”) 
# equality to c
elif option == "c":
	# printing message
	print (“you choose the third option”) 
#otherwise
else:
	# printing message
    print("Invalid choice.")

Task 2
x is undefined - prepend "x = int(input())\n"
# if x is non-negative
	# if x less than 10
	# print message

Task 3
x is undefined - prepend "x = int(input())\n"
# if x is positive
	# increase x, inform user
# otherwise
    # decrease x, inform user
# print message