Final answer:
To output 'Jenny yelled "Run, Forrest, Run!"', use a backslash to escape the quotes within the string in programming languages like Python and JavaScript.
Step-by-step explanation:
To produce the line of output Jenny yelled "Run, Forrest, Run!" in code, you must escape the quotation marks inside the string so they do not interfere with the string boundaries. Depending on the programming language you are using, this can typically be done using a backslash (\) before the quotes you want to include in the string.
Here is an example in Python:
print("Jenny yelled \"Run, Forrest, Run!\"")
And here is an example in JavaScript:
console.log("Jenny yelled \"Run, Forrest, Run!\"")
In most programming languages, the backslash is used to escape special characters, allowing them to be treated as regular text within a string.