A.They make code execution faster.

B.They automatically optimize memory usage.

C.They enforce strong typing in JavaScript.

D.They allow the Node.js server to handle multiple requests simultaneously.

A.selector -> { property : value; }

B.selector { property : value }

C.selector { property = value; }

D.{ selector : property = value; }

A.href

B.type

C.rel

D.src

A.A built-in spellchecker for text content

B.A plugin for adding multimedia content

C.A framework for positioning elements in a grid-based layout system

D.A method for changing the color of the elements

A.Functional programming

B.Procedural programming

C.Assembly language programming

D.Object-oriented programming