you should always read the ______ before you a buy a product...

answer is 9 letters long third letter is an a...

guarantee?

guarentee

To find the answer, let's break down the requirements given:

1. The answer is 9 letters long.
2. The third letter is an "a."

We can use these clues to solve this riddle. For the first clue, we know that the word has nine letters. Now, let's think about the second clue. Since the third letter is "a," we need to find a word that satisfies both conditions.

One possible answer could be "manuals." This word has nine letters and the third letter is "a." In general, reading manuals before buying a product is beneficial as they provide important information about the product's features, usage instructions, and safety precautions.

So, the answer is "manuals."