Walsh Book 1 Paper 1 Q 63

[Josa]

Can someone please help us with this question:

(hid hide) (fox foxy)

(bus [ ? ] )

Answers given are :

buss
busy
bush
busk
bust

Correct answer is bust but can't understand why

[mitasol]

It is the next letter in the alphabet from the last letter in the first word.

de xy and st

I hope that makes sense.

[Josa]

Thank you, thank you Mitasol, you've made a confused mum and ds not so confused

[mitasol]

That's good - I thought my explanation was terribly confusing.