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

C. STUDIOUS

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

C. WEAK

Choose a word similar to the group: 'happy, joyful, elated'.

B. CHEERFUL

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

B. FAST

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

C. STUDIOUS