Question

make a word that means \can be known by someone before it happens.\

Explanation:

To form a word meaning "can be known by someone before it happens", we analyze the roots and suffixes. "Predict" relates to knowing before, and "able" means capable of. Combining "predict" and "able" gives "predictable", which means capable of being predicted (known before happening). The other options like "agree" and "ment" don't fit the meaning.

Answer:

predictable