can you please help me here i appreciate it

Which of the following elements would make one covalent bond? A. O (Oxygen) B. H (Hydrogen) C.C (Carbon) D. None are correct E. Ne (Neon) QUESTION 2 The dot structure for Nitrogen contains how many unpaired electrons? A. 5 B. 4 C. 2 D. None are correct E. 1 QUESTION 3 The correct lewis structure for COH2 contains how many covalent bonds? A. 1 B. None are correct C. 3 D. 2 E. 4 QUESTION 4 How many covalent bonds would be made between two O (Oxygen) atoms? A. 1 B, 2 c. 3