Why are local variable names beginning with an underscore discouraged?

Related MCQs

•                            are identified by their addresses, we give them names (field names / variable names) using words.
• What happens if a local variable exists with the same name as the global variable you want to access?
• On assigning a value to a variable inside a function, it automatically becomes a global variable.
• Which of the following is an invalid variable?
• Which of the following cannot be a variable?
• What is a variable defined outside a function referred to as?
• What is a variable defined inside a function referred to as?
• The expression Int(x) implies that the variable x is converted to integer.
• How are variable length arguments specified in the function heading?