what is a prefix?

A   A word within a word

B   A group of letters put before a root word which changes its meaning

C   A group of letters put at the end of a root word which changes its meaning

D   A group of letters put at the end of a sentence which changes its meaning

Check Also

what does the word ‘unheart’ mean?

A   Hurt Badly B   Hurt C   Badly Wounded D   Not Hurt