"I" is the one word among the following choices given in the question that represents the <span>subject of this sentence. The correct option among all the options that are given in the question is the fourth option or option "d". I hope that this is the answer that has actually come to your desired help.</span>
Answer:
who: the student
what: won the competition
where: school?
when:during school
why: *put why they won*
how: *what they did to win*
NaF is not covalent, but ionic, as Na and F are on opposite sides of the periodic table.
