'Why' is the wrong option cause it is need an object. Is it right?

[Watie]

English Language Tests, Intermediate level

ESL/EFL Test #796 "Where, Why, What, When and How (4)", question 9

......... are you reasons for leaving? I thought you liked it here.

(a) Why
(b) When
(c) How
(d) What

English Language Tests, Intermediate level

ESL/EFL Test #796 "Where, Why, What, When and How (4)", answer 9

What are you reasons for leaving? I thought you liked it here.

Correct answer: (d) What

Your answer was: incorrect
Why are you reasons for leaving? I thought you liked it here.
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'Why' is the wrong option cause it is need an object. Is it right?
Thanks

[Beeesneees]

Another typo - you instead of your.
_________________
Cheers m' dears!

[Linda]

The typo is fixed.
Yes, 'why' is the wrong option.
_________________
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