Say what is meant by the following: good as gold; as regular about her tasks as a clock; over us like a motherly old hen; .

As good as gold : especially used to describe children's behaviour as well- behaved.
Regular as a clock in the phrase "is as regular about her task as a clock" : means that is very punctual. does everything right on time. 
Mother hen in the phrase "watches over us like a motherly old hen" means : like an overly protective and fussy parent, who watch over their brood and care a lot.

Ican’t see, maybe put the link

The answer would be d.hope this !