After multiple objects have been inserted on a slide, the last inserted object is at the bottom of the stack

In a data table each row is considered a(n) ________

Fill in the blank(s) with correct word

Which of the following is not true of ExecutorService?

a. It is a subinterface of Executor. b. It is an object that can be run in a separate thread. c. It declares method shutdown. d. It manages a group of threads.