String handling I

Computing

"When two or more strings are joined together" is the definition of which of the following terms?

"A character in a string or an item in a sequence" is the definition of which of the following terms?

"Performing operations on string" is the definition of which of the following terms?

"A value that is text. This can include numbers but they will be read as text" is the definition of which of the following terms?

guizero is an example of which of the following

Which of the following is not a third party module that includes functionality to create a GUI?

What type of widget is at position A in the following image?

What type of widget is at position B in the following image?