Happy Halloween! We definitely didn't scare you off with last week's quiz. In fact, more of you answered than usual, and more than half of you got it right:

Here's how we would write the sentence: In this day and age, it's hard to tell whose data is secure.

So we count three total errors that we put into two buckets:

1. Contractions and possessive pronouns: Possessive pronouns can be tricky because we're so used to using apostrophes for possessives. But possessive pronouns (its, hers, theirs, etc.) don't have apostrophes. "It's" is a contraction in the sentence, so you need the apostrophe. "Who's" was incorrect because you need the possessive pronoun "whose."
2. In this day and age: The idiom is "in this day and age," not "in this day in age."

All right, for those of you who said there were four errors: We get it. "Data" is the plural of "datum," so the end of the sentence could be "whose data are secure." It's a judgment call!

We'll keep the same format for this week's Halloween-themed quiz:

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