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

C. POWERFUL

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

C. SERENE

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

B. ELATED

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

B. SWIFT

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

C. LUMINOUS