Difference between practise and practice

[NoName sorry]

Test No. incompl/advan-5 "Learning tips and instructions", question 6

Another important activity is to ......... your spoken language.

(a) train
(b) practise
(c) exercise
(d) emphasise

Test No. incompl/advan-5 "Learning tips and instructions", answer 6

Another important activity is to practise your spoken language.

Correct answer: (b) practise

Your answer was: incorrect
Another important activity is to exercise your spoken language.
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Isn't it practice?and not practise?

[Torsten]

In British English practise is the verb (which is needed in the sentence above) and practice is the noun.
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Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary