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Question 1:  What is a higher-order function in JavaScript?

(A) A function that returns a string

(B) A function that returns or takes another function as an argument

(C) A function that only works with numbers

Question 2:  Which method creates a new array by calling a function for each element?

(A) map

(B) reduce

(C) filter

Question 3:  Which method is used to filter out elements based on a condition?

(A) map

(B) reduce

(C) filter

Question 4:  What does the reduce function do?

(A) It multiplies all elements

(B) It returns a single value by reducing an array

(C) It filters odd numbers

Question 5:  Which of the following is not a higher-order function?

(A) parseInt

(B) map

(C) filter

Question 6:  What does map return?

(A) A string

(B) A new array

(C) A single value

Question 7:  Can higher-order functions be stored in variables?

(A) Yes

(B) No

(C) Only in strict mode

Question 8:  Which function is best used to transform each item in an array?

(A) map

(B) filter

(C) reduce

Question 9:  What does filter return?

(A) A filtered string

(B) A filtered array

(C) A new object

Question 10:  What is required for reduce to work properly?

(A) A callback function

(B) An index value

(C) A filter condition