Really need help with these javascript qestions

10. Which best describes global scope in JavaScript a. A variable declared with yar, let, or const inside a function becomes a global variable b. Any variable defined outside of a function is a global variable. c. All variables in JavaScript have global scope d. All variables in JavaScript have local scope. 12. Which of the following statements about JavaScript functions is NOT correct? a. JavaScript functions can be hoisted. b. JavaScript functions are first class value. c. JavaScript function expressions can be hoisted d. JavaScript functions allow pass-by-value. 14. Variable Hoisting refers to what in JavaScript? a. The ability to refer to something before it is declared without getting a reference error. b. The ability to initialize a variable before using the variable. c. The ability to change the scope of a variable from global to local. d. The ability to make two variables be encapsulated together. 15. Which of the following are primitives in JavaScript? a. String b. Number c. Boolean d. Undefined e. All of the Above