How do you interpret the squiggly line in the image below?
Before you proceed:
- If this HIT looks familiar to you, please do not proceed (you probably have done this work or a similar one for us before so we will reject your work if you continue).
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Instructions:
- Look at the image below and answer this question: What do you think the squiggly line, indicated by a red arrow, might mean?
- Pick your answer from the list of options below the image.
- The answer that you pick should be the one you feel most strongly about.
- Note that one of the answers in the list is not related to the task; it has been added to make sure you are not picking an answer at random.
- If you pick the random answer you will not be paid for this HIT, please read all the options before you pick one.
Image:

For me, the squiggly line in this image indicates:
Set A contains other hidden sets.
There are more unique elements in set A than in B or C.
A bar chart for stock prices.
Some uncertainty regarding the membership of some elements to set A.
The drawing was incomplete and this line was added by a person in free hand.
An unintended printing mistake.
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