Choose a word similar to the group: 'fragile, delicate, brittle'.

C. WEAK

Choose a word similar to the group: Happy, Joyful, Cheerful.

C. ELATED

Choose a word similar to the group: 'swift, rapid, quick'.

B. FAST

Choose a word similar to the group: 'diligent, industrious, hardworking'.

C. STUDIOUS

Choose a word similar to the group: 'ancient, old, archaic'.

C. ANTIQUE