Question

edit a verb, if necessary, to make sure the sentence is in the future tense.
next week, drax explained the meaning of those blinking lights.

Explanation:

The time phrase "Next week" indicates future tense. The verb "explained" is in past tense. We need to change it to future tense. The simple future tense of a verb is formed by using "will" + base form of the verb.

Answer:

Next week, Drax will explain the meaning of those blinking lights.