No work because it's Sunday

[WaCo]

Test No. incompl/elem-19 "Late Again", question 10

Remember that there's no work today ......... it's Sunday.

(a) for
(b) while
(c) because
(d) however

Test No. incompl/elem-19 "Late Again", answer 10

Remember that there's no work today because it's Sunday.

Correct answer: (c) because

Your answer was: correct
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Why not while? I'm a c++ programmer and from any programmers point of view there should be "while" because then the sentence has a logical/mathematical sense.
Only because I know you are not a programmer I chose "because".

[Torsten]

You need the word because here as you want to give a reason why there is no work that day. You could also ask Why is there no work today? And the answer would be Because today is Sunday.
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Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary