Answer:
The best testing strategy I have when it comes to multi choice is
if there are 4 answers ...2 of them you can easily eliminate with no problem. Then you have 2 more answers left and you find facts about each on and which one best relates to the question then boom. Oh and also always check for spelling and grammar in the answers because it will be wrong if its not correct.
Majority of the southern economy depended on slave labor
Answer: .3 or 3/10
Explanation: The probability that her first answer is correct is 2/5. Since she got the first guess correct, now there is only 1 correct answer out of 4. There is a 3/4 chance she will get the next problem wrong
So: 2/5 x 3/4 = .3
The answer to your problem is...
266631
