To answer this question, we need to work backward and determine the day that was four days before yesterday.

Let's break down the problem step by step:

1. Today is [insert current day].
2. Three days after today will be [insert day].
3. Four days before yesterday will be [insert day].

Since three days after today will be Tuesday, we can deduce that today is Saturday.

Now, let's calculate four days before yesterday:

1. Yesterday was [insert day before today].
2. Four days before yesterday will be [insert day].

Therefore, four days before yesterday will be Tuesday.

To summarize:

Option A) Friday - This option is incorrect because four days before yesterday is not Friday. Option B) Monday - This option is incorrect because four days before yesterday is not Monday. Option C) Tuesday - This option is correct because four days before yesterday is indeed Tuesday. Option D) Sunday - This option is incorrect because four days before yesterday is not Sunday.

The correct answer is option C) Tuesday. This option is correct because it represents the day that was four days before yesterday, given that three days after today is Tuesday.

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