please guide me which question is correct and if wrong, then what is the right answer for all these MCQs.

Secondly, the question 6 options are given, all those Q6 must be from the option. only for Q6

What is the number of element movements required, to insert a new item at the beginning of a Linked-List with size 80? a. 80 b. 8 C. 0 d. None of the other answers Which of the following is not correct? a. ADT (Abstract Data Type) may be implemented with different programming languages. b. None of the other answers c. ADT (Abstract Data Type) may be implemented with different data structures. d. ADT (Abstract Data Type) is focusing on the implementation details. Which of the following represents a collection of data elements and their relations in a formal mathematical sense? a. Algorithm b. Data Type c. Abstract Data Type d. Data Structure What is the number of element movements required, to remove the second element from an Array-List with size 21? a. 18 b. 19 C. 3 d. 2 "Select the option of choice that "best" completes the statement, matches the item, or answers the question. Finite step-by-step list of well-defined instructior Data cannot be decomposed into smaller parts Data stored in "nodes" connected together A Non-Linear Structure Operations without implementation details Which of the following is correct in terms of element movements required, when inserting a new element at the middle of a List? a. All of the other answers b. Array-List performs better than LinkedList. c. Linked-List performs better than ArrayList. d. Linked List and Array-List basically perform the same