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

D. CHEERFUL

Choose a word similar to the group: Quick, Fast, Swift.

B. RAPID

Choose a word similar to the group: Bright, Luminous, Radiant.

D. GLOWING

Choose a word similar to the group: Strong, Sturdy, Robust.

C. POWERFUL

Choose a word similar to the group: Calm, Peaceful, Tranquil.

C. SERENE