Which of the following sentences uses prepositions correctly?
a. the school bus finally arrived at the museum.
b. for years, my parents differed from each other on politics.
c. she might of gone to the party if it started earlier.
d. i sat between my mother, sister, and brother-in-law.

What excerpt from a student essay maintains the most objective tone

What is a mechanism by which organisms maintain homeostasis when the level of one substance influences the level of another substance or the activity of an organ.

Choose the best paraphrase of bashes haiku an old silent pond a frog jumps into the pond splash silence again a.the pond was silent until the frog jumped in splashing now alternates with quiet b.a pond will never be silent after one frog jumps into it and starts splashing around c. a frog jumps into a quiet pond there is a splash then all is quiet once more d. there was once an accident body of water that a frog splashed into and died