Which of these is true of JavaScript operations involving different data types?

Select one:

a. JavaScript automatically converts different data types to Numbers.

b. JavaScript automatically converts different data types to Strings.

c. A runtime error always occurs when operations involve different data types.

d. JavaScript automatically converts from one data type to another as necessary.

e. A syntax error always occurs when operations involve different data types.

Which of these is a valid JavaScript function declaration for a function that takes a number parameter and returns a boolean result?

Select one:

a. someFunction(someNumber)

b. function someFunction(number someNumber)

c. boolean function someFunction(number someNumber)

d. boolean function someFunction(int someNumber)

e. function someFunction(someNumber)

Which of these is a valid JavaScript function declaration for a function that takes no parameters and returns no result?

Select one:

a. void someFunction(void)

b. someFunction()

c. function someFunction()

d. function someFunction(null)

e. void function someFunction()

Which of these is a valid way in JavaScript to get the absolute value of a number?

Select one:

a. Math.abs(someNumber)

b. Math.|someNumber|

c. -someNumber

d. |someNumber|

e. absoluteValue(someNumber)

Which of these is NOT a feature of JavaScript?

Select one:

a. is dynamically typed

b. global scope

c. is the default scripting language in all leading browsers

d. block-level scope

e. function-level scope