If you declare an array double[] list = {3.4, 2.0, 3.5, 5.5}, list[4] is ________. Group of answer choices3.43.55.5undefined

Break Down the Problem

1. Identify the array declaration and its contents.
2. Determine the size of the array.
3. Access the specified index of the array to find the value.

Relevant Concepts

• In programming, array indexes start at 0.
• The size of the array is equal to the number of elements declared.

Analysis and Detail

1. The array is declared as double[] list = {3.4, 2.0, 3.5, 5.5}, which contains 4 elements:

   • list[0] = 3.4
   • list[1] = 2.0
   • list[2] = 3.5
   • list[3] = 5.5

2. The index list[4] refers to the fifth element of the array. Since the highest valid index for this array is 3 (due to zero-based indexing), list[4] is out of bounds.

Verify and Summarize

• Since list[4] is trying to access an index that does not exist, it will result in an "undefined" or "ArrayIndexOutOfBoundsException" error in many programming languages.

Final Answer

list[4] is undefined.