Explanation:

Let’s break this sentence down.

Original statement:

Some believe that the same technology that has ______ our world might also imprison us if we don’t seriously examine its effects on us personally and collectively. The impact of cell phone use is more than a passing phenomenon and something worthy of ______ academic study.

Looking at the options for each blank:

- Blank 1:

- I. Impacted (neutral)

- II. Liberated (freed, positive)

- III. Oppressed (restricted, negative)

- Blank 2:

- IV. Legitimate (valid, proper)

- V. Comprehensive (thorough, wide-ranging)

Which combinations fit?

- "Liberated our world" makes sense, fits well with the contrast to “imprison us.”

- "Legitimate academic study" is natural—worthy of valid study.

So, Option 2: II-IV is the clear winner.

- “The technology that has liberated our world..." ? technology freed us but could also imprison us.

- “Something worthy of legitimate academic study” ? it deserves serious research.

Other combos:

- I-IV: “Impacted our world” is okay, but not as sharp a contrast as “liberated—imprison.”

- III-V: “Oppressed our world... worthy of comprehensive study” doesn’t flow with the point the sentence is making.

- III-IV: "Oppressed... legitimate study” makes little sense; the first blank doesn’t fit.

- No combination fits: not true—one does.

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Option 2 is correct!