Asuperior ovary has
select one:
a. sepals, petals and stamen attached below it
b. only sepals attached below it
c. only stamen attached below it
d. only petals attached below it

a. sepals, petals and stamen attached below it

Explanation:

A superior ovary is the characteristic feature of the hypogynous flower. In this type of flower all the petals, sepals and stamen are remained attached to the receptacle that lies below the ovary also called as the gynoecium of the flower. All the floral parts grow underneath the ovary from the site where the carpel of the flower actually arises.        

thats not even an aswer choice

layer 3 is younger than layer 6.