$1.$What is the number of element movements required, to remove the fourth element from an Array$-$List with size $39?$

$2.$ What is the number of element movements required, to insert a new item in front of the eleventh element of a Linked$-$List with size $28?$

$3.$ Which of the following is not correct?

a$.$

ADT $($Abstract Data Type$)$ may be implemented with different data structures.

b$.$

ADT $($Abstract Data Type$)$ is focusing on the implementation details.

c$.$

ADT $($Abstract Data Type$)$ may be implemented with different programming languages.

d$.$

None of the other answers

$4.$ Which of the following is true?

a$.$

Linked$-$List is in favor of the insertion and deletion operations.

b$.$

Linked$-$List is in favor of the get and locate operations.

c$.$

Array$-$List performs better than Linked$-$List.

d$.$

Linked$-$List performs better than Array$-$List.

thank you.