I also thing it's all of the above but I have a doubt. Do some research to make sure
Answer: Letting your arms swing loosely
Explanation: the choice that best represents a characteristic of good walking technique is letting your arms swing loosely
Answer: 3 - nervous, but I’ve studied and comprehended enough that I’m slightly more comfortable.
Explanation:
The correct answer is B.
When testing the effectiveness of a drug a method is used whereby two groups of people are administered a drug. One will be given the real drug and the other will be given a placebo which is usually a sugar pill. Results from both groups will be collected and used to establish whether a true effect of the actual drug has taken place.
