Answer:
Meeting : Conference : : Law : Statute
Step-by-step explanation:
What you've been given is an analogy. This means that, based on two known words (in this case meeting and conference), you need to determine which two words are related the same way they are. Meeting and conference have very similar, almost identical meaning: an assembly of people for a particular purpose, usually for formal discussion. This makes them synonyms.
What you need to do next is find the synonym of the word law. When you're not sure about what a word means, you can look it up in the dictionary. Out of all listed words, the only one that has the same meaning as law is statute: a written rule (law) passed by a legislative body.