In Python, variables do not need to be declared before being assigned a value - a variable is created the moment a value is assigned to it. The statement that correctly assigns the value 100 to the variable x is x = 100, as Python uses = for assignment unlike other languages that may use << or := instead.

7. Q. In Python, a variable must be declared before it is assigned a
value:
• True
• False

8. Answer : False
Variables need not be declared or defined in advance in Python. To
create a variable, you just assign it a value.

13. Q. Which of the following statements assigns the value 100 to the
variable x in Python:
A. x << 100
B. x ← 100
C. x = 100
D. x := 100

14. Answer : C