The SQL mode to check for divide by zero error is . . . . . . . .

Answer: Option B

This question is about MySQL's SQL modes, which control how MySQL handles different situations.

One of these situations is division by zero. When you try to divide a number by zero in a query, it can lead to an error or unexpected results.

The SQL mode "ERROR_FOR_DIVISION_BY_ZERO" is specifically designed to detect and signal these division by zero errors.

Therefore, the correct answer is Option B: ERROR_FOR_DIVISION_BY_ZERO.

Let's break down why other options are incorrect:
* Option A: STRICT_ALL_TABLES: This mode is used to enforce stricter data type checking and other rules, but it doesn't directly deal with division by zero errors.
* Option C: ERROR_DIVIDE_BY_ZERO: This option doesn't exist in MySQL's SQL modes.
* Option D: ERROR_WHEN_DIVIDE_BY_ZERO: This option also doesn't exist in MySQL's SQL modes.

Key takeaway: To ensure your queries handle division by zero correctly and produce meaningful results, use the ERROR_FOR_DIVISION_BY_ZERO mode.