Dehyphenation is the removal of a hyphen it hyphens.
Answer:
1. I was struggling to figure out how lightning works, but then it struck me.
2. She has a photographic memory but never developed it.
3. I've been to the dentist many times so I know the drill.
4. Always trust a glue salesman, they tend to stick to their word.
A foot<span> in </span>poetry<span> refers to the metrical </span>foot<span>. It is a unit of measure </span>used<span> to analyze the rhythm of a </span><span>poem</span>
Mr. France and Mr. Webster (they) gave us their opinions......
C is the correct answer