If i would have to make an educated guess, i would say C.
Answer:
• oxygen
• nitrogen
• carbon
Explanation:
Electronegativity is a scale that measures an atom's attraction towards an electron. The more electronegative an atom is, the more it attracts an electron. Electronegativity increases as we go up and from left to right in the periodic table.
Hence, the following elements are considered to have a high level of attraction for surrounding electrons
• oxygen
• nitrogen
• carbon
Hollow, that's why birds can fly. There is nothing in the bone to weigh them down.
The answer to this question is option B for sure.
