Hello. You did not show line 4 to which the question refers, which makes it impossible for the question to be answered accurately, but I will try to help you in the best possible way.
The definition "Showing great intelligence" will be the correct one if line 4 presents a text referring to smartness, academic quality and wisdom.
The definition "Full of light" is correct if line 4 has a text on clarity, lighting and brightness.
The definition "Excellent or superior in performance" will be correct if line 4 presents a text about something or someone who has a great capacity to complete activities in an amazing way.