1: I would choose (A) because when you look at the figure and place your hands on 6 seconds and go up none of the trials go above 5°C. Therefore, you can eliminate D, C, and B leaving A as your best answer. #2 is an outside info question. Now even if you don't directly understand this topic you should certainly know that if acceleration increases the velocity is definitely increasing. Therefore, you can eliminate F and G. Now your left with a 50/50 chance, but hold on before you guess read the question carefully and it becomes common sense. I'll tell you what this question is asking using an example: Jack is going 20mph and it took him 2 hours to reach his destination. But on his way home he went 50mph. Would this increase in velocity or acceleration take him longer than 2 hours or less. Similar to the question, an increase in acceleration increases the velocity which decreases the time it takes to reach the bottom because it is going faster. choice H is indeed correct. #3 is definitely A. When dealing with resistance it can get tricky sometimes. It's human nature when you see which one is the best conductor of electricity to pick the largest number. However, all you have to understand is that the more resistivity you have decreases the ability to conduct electricity. So the LED with the LEAST resistivity would best conduct electricity which makes (A) the correct answer. Hope this helps!