Aren't bumble bees a kind of a wild insects that are not kept by humans?

[Maxmax]

English Grammar Tests, Elementary Level

ESL/EFL Test #136 "Vocabulary Practice: Bees (1)", question 7

Large, hairy bees that work together are also called ......... bees.

(a) site
(b) bumble
(c) bramble
(d) brush

English Grammar Tests, Elementary Level

ESL/EFL Test #136 "Vocabulary Practice: Bees (1)", answer 7

Large, hairy bees that work together are also called bumble bees.

Correct answer: (b) bumble

Your answer was: incorrect
Large, hairy bees that work together are also called site bees.
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Hello, I have a question: aren't bumble bees a kind of a wild insects that are not kept by humans? If it's so, I think this question is a bit out of subject. Sorry, if I'm not right.

[Maxmax]

In addition, as I know, bumble bees live in a ground holes, mostly alone.

[Beeesneees]

Bumble bees live in nests in colonies, and they work together (The nest comprises the queen, the female workers and the male drones). They are wild insects, but that does not affect the answer to the question.

The question above doesn't mention anything about the bees being kept by humans. They work together in the wild.
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"Inside every old person is a young person wondering what happened."
Terry Pratchett

[Maxmax]

Oh, I'm sorry. Probably, I've muddled everything up.

[Beeesneees]

No problem. It shows that you are really thinking about things and not taking them at face value.
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"Inside every old person is a young person wondering what happened."
Terry Pratchett