select the best transition words or phrases in the text below.\nin contrast to reducing the amount of…

Brief Explanations:

The sentence is listing benefits of making homework optional, with "increase their desire to learn" as a second benefit (after reducing stress). "Firstly" is incorrect here as it implies the first point, but we need a word for adding a second point. A better transition would be "secondly" (or "additionally", "furthermore"). However, if we assume the error is in "firstly" and the intended is a word for sequential or additional benefit, and the task is to correct the transition: the context is adding a second benefit, so "secondly" (or "additionally") is better. But if the options (not fully shown) include "secondly" or similar, that's the fix. Since the current "firstly" is wrong (as reducing stress is first, increasing desire is second), the best transition here should be a word indicating the second point, like "secondly" (or "additionally", "moreover").

Answer:

The incorrect transition is "firstly"; a better one would be "secondly" (or "additionally", "furthermore" depending on options). If we assume the task is to select the best (correcting "firstly" to a word for the second benefit), the best transition phrase here is "secondly" (or similar that denotes a subsequent benefit).