Which proofreading mark would you use to indicate an error in this sentence?What isthe date?

The proofreading mark you would use to indicate an error in the sentence "What isthe date?" is the insertion mark (^). This mark is used to indicate where something needs to be added in the text.

Here are the steps to correct the sentence:

1. Identify the error: In this case, the error is that there is no space between "is" and "the".

2. Decide on the correction: The correction is to add a space between "is" and "the".

3. Apply the proofreading mark: You would place the insertion mark (^) between "is" and "the" to indicate where the space should be added.

So, the sentence with the proofreading mark would look like this: "What is^the date?"

The proofreading mark you would use to indicate an error in the sentence "What isthe date?" is the insertion mark (^). This is used to show where an additional or missing letter, word, or punctuation is needed.

Here's how you would apply it:

"What is^the date?"

The caret (^) is placed where the space should be between "is" and "the". This indicates that a space is missing and should be inserted.