Answer:
b) The mother took her three year old daughter to the zoo to see the monkeys.
Step-by-step explanation:
In the above options provided, it is evident that the child was taken by her mother to the zoo. But the sentence framing of option (a) is wrong in that the way "three-year-old" is written with the hyphen is not needed. The other two options (c) and (d) are also wrong as it just mentions the child seeing the monkeys, with another use of the hyphen "three-year-old" or "three-years" where it is not necessary. So, that leaves us option (b) as the correct sentence.