Hello !
a. Great Britain is part of Scotland. → True.
b. The capital city of Australia is Ottawa. → False : The capital city of Australia is Canberra.
c. Wales is in Ireland. → False ; Wales is in Great Britain.
d. South Africa was an English colony. → True.
e. In Australia, there are 5 states. → False : In Australia, there are 6 states.
f. The United Kingdom is in the British Isles. → True.
g. There are 47 states in the USA. → False : There are 50 states in the USA.
h. English is the most spoken language in the world. → True.
ミi hope that helped ! ^^