Final answer:
The root words are matched with their correct definitions: Loc (Place), Ject (To throw), Meter (Measure), Grad/Gress (To step), and Junct (To join), thereby aiding in understanding vocabulary construction.
Step-by-step explanation:
To correctly match each root word with its definition, we need to look at the meanings of the specific roots:
Loc - D) PlaceJect - E) To throwMeter - B) MeasureGrad/gress - A) To stepJunct - C) To join
English language vocabulary often contains words that are built from various root words, which can help us understand the meanings of new words. For example, the root 'loc' is found in words like 'location,' signifying a place. Similarly, 'ject' appears in 'eject,' meaning to throw out. The 'meter' root is used in words like 'thermometer,' a device used to measure temperature. 'Grad' and 'gress' are seen in 'progress,' meaning to step forward, and 'junct' is part of 'junction,' which refers to where things join.