HELP BIO whichever lad/lass is right gets branliest and a light saber

Which phrase, if placed in box X, would correctly complete the flowchart shown below?
Decreased concentration of oxygen in leaf cells
Increased use of starch in root cells
Increased concentration of glucose in leaf cells
Decreased ATP in root cells

Increased concentration of glucose in leaf cells

Explanation:

Based off the flowchart, the process that it's describing is photosynthesis because during this process sunlight and CO2 are taken in by a plant to produce glucose. If we are exposed to sunlight and are increasing the use of CO2, then there must be a higher concentration of glucose in the leaf cells. Glucose is a product of photosynthesis.

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

i would think a oil tanker that has leaked in a bay