The first thing that you want to do before testing anything out is look at your previous diagrams since this question tends to be last.The rule sub should be present in EVERY VALID diagram you have made in the past. If it is not represented then it cannot be correct because to make them you were following the original rule.

How to test out the answer choices is by making a diagram where you follow the answer choice's new rule and try to break the original rule. If you are able to do this then the answer is wrong. So in other words plug in and try to break original rule, if you can then it wrong.

Beware of overly restrictive rules. These DO work like the original rule BUT go a step too far and add an extra restriction in some way and therefore wrong.

If you are down to two answer choices that once plugged in don't break the original rule, you will find that the wrong answer is going to be the overly restrictive one.

Hope this helps!

Thank you!

I used to have a lot of issues with MBT and this was the best way I've come to understand it:

1)find the related statements: There will be multiple statements in the stimulus and they will be talking about something in common. There is usually a term linking those statements together and through that term we can make an inference.

Think about the kind of reasoning of that those sentences contain. Alway be on the look out in MBT for conditional, causal, and quantitive language (implying some sort of comparison)

Conditional logical is 75% of most MBT questions. See what you can link up and what the contrapositives are. Most of the MBT questions will involve some sort of chain.

Comparisons make up 19% of MBT questions. These involve language like percentages, "more than". They are usually comparing two different things at any point in time. EX. the population of city D is more dense than city E. Or they compare ONE thing over two points in time. Ex. City D is more dense today than it was 10 years ago.

Causation make up 15% of MBT questions. Tend to be the most rare but still can occur. Look for that causal language "as a result" "causes" etc. You will often see a causal chain in the harder questions trying to confuse you.

Anticipate the answer choices. Now that you have made your inferences you can move on the questions.

Go through the answers. usually go from wrong to right. Here lets try to eliminate the trap answer choices:

-Out of Scope / Speculation and can't be supported by the stimulus.

-Unsupported relationships: these are mistakes in Logic like Mistaken Reversals/ Negation or just trying to link up two unrelated things in a way that can't be supported. Usually connecting random terms. There is also Contradictions and answers that just provide Premise Support

-Degree: Too strong