Many authentic scientific discoveries were ignored.
Answer:
geeta didnt cut the cake with a knife
Answer:
Because he was the longest friend he had ever had and he felt an obligation to protect him
After walking to school, the bus slowly passed by.
This sentence contains a dangling modifier. The dangling modifier is "After walking to school". We don't know who did the walking. The bus is the subject of the sentence, but we know that the bus certainly didn't do any walking. We also don't know what the bus passed by. The rest of the sentences are correct as written. In the last option, it is clear that Egypt is the one waiting for the bus.