Answer:
Your answer is option C, or the third option.
They do not let the user type in letters, numbers, and words.
Explanation:
Strings are defined as a sequence of characters literal, constant, or variable. These sequences are like an array of data or list of code that represents a structure. Formally in a language, this includes a finite(limited) set of symbols derived from an alphabet. These characters are generallu given a maximum of one byte of data each character. In longer languages like japanese, chinese, or korean, they exceed the 256 character limit of an 8 bit byte per character encoding because of the complexity of the logogram(character representing a morpheme((which is the simpliest morphological(form or structure) unit of language with meaning)) character with 8 bit (1 byte, these are units of data) refers to cpu(central processing unit) which is the main part of a computer that processes instructions, and sends signals.
 
        
             
        
        
        
This question is a bit ambiguous as there were a few features that were added and any could be perceived as distinguishing depending on what you look for in your OS. I do believe this is in reference to the Wikipedia article on Windows 2.0 though as the first two listed features make note of Windows 1.0 specifically, therefore:
Windows 2.0 allowed windows to overlap, Windows 1.0 could not do this. 
Windows 2.0 introduced new and more complex keyboard shortcuts and terminology such as "Minimize" and "Maximize" vs. Window 1.0's "Iconize" and "Zoom" 
Source: https://en.m.wikipedia.org/wiki/Windows_2.0
        
             
        
        
        
I believe you have to install locate with "sudo apt-get install locate" and type "locate 'filename'"
 
        
             
        
        
        
C you should believe in yourself and your abilities
        
             
        
        
        
Answer:
D
Explanation:
Two dimensional array contain both rows and columns. Each row represented one record and each column represent one filed in that record.
for ex: int grades[5][3];
here array grades contains 5 rows and in each row we have 3 columns
if we have grades[i][j] then " i " represents number of rows and j represents the number of columns in that row.
j<grades[i].length represents i=0 to 2[here no of columns are 3, array index starts from 0 to 2]
The Answer is D