Nectar is used for attracting pollinators by plants, and nectar is secreted in a shallow nectar cup at the base of flower. Given these facts, what do plants use to attract pollinators among the following options:
- Something made from fermented ricce
 - Something made primarily of oxygen and nitrogen
 - Something that is secreted in a shallow cup.
 - Something that grows into the ground
 - chain called a polynucleotide
 - Something that vaporizes into the air
 - Something that grows on a bush
 - chemical compound NaCl


 

   Something that is secreted in a shallow cup.      