Which two sentences are correctly punctuated a)in my back yard, where the green grass should be , there are only weeds

b)kacy went to China in July the hottest month of the year, and will go angin in the fall.

c)my youngest cousin, who moved to Florida, is coming for a visit this summer

d)The necklace which was very old, was put on display in the museum.
e)her favorite actor, who is known for his deep voice is in Broadway play.

f)jian, who is taking the bus will be here in time for the dinner party.