In which direction do incoming trna molecules move between sites on the large ribosomal subunit as the elongation process takes place?

The correct answer is: A--> P--> E.

Explanation:

Translation is a key process made by the cell, from which proteins are synthesized. In order to function, translation needs several types of RNA: mRNA provides the "code" that will translate into a protein, rRNA forms the ribosome where the translation is going to take place, and tRNA provides the amino acids.

Elongation goes through A--> P--> E.