C. Incomplete sentance. Suboridinate clause.
The girl riding her bike is not enough to be a full sentance.
Some things you could do to fix it:
The girl was riding her bike.
The girl riding her bike was very pretty.
The girl was riding her new bike.
Sentence 4 needs to be revised because interrupts the flow of the author’s tone
1. Part to whole: Los Angeles is to America as Cebu is to Philippines.
2.Function of an object: book is to reading as pencil is to writing.
3. Degree of intensity: drizzle is to deluge as sniffles is to pneumonia.