Which option used to suggests other word with similar meaning to the word you have selected in the word​

Acetylene is a gas which burns rapidly on its own, and is considered highly explosive. a) true b) false

Communication is the exchange of information. true false

Pp 4.1 design and implement a class called sphere that contains instance data that represents the sphere’s diameter. define the sphere constructor to accept and initialize the diameter and include getter and setter methods for the diameter. include methods that calculate and return the volume and surface area of the sphere (see pp 3.5 for the formulas). include a tostring method that returns a one-line description of the sphere. create a driver class called multisphere, whose main method instantiates and updates several sphere objects.