Over the last 20 years, the growth of information technology has been

Great explanation from Capricorn369 already. Just wanted to chime in with a general suggestion on this type of mistake.

Consider the following example:

"My car's gas mileage is worse than your car."

Same type of mistake here; we're comparing my car's gas mileage to you car. The GMAT loves to test this kind of comparison mistake – we're comparing an attribute of one object to another object itself. We need to compare object-to-object, atribute-to-atribute to stay logical.

There are a couple ways to fix the problem in my example sentence:

"My car's gas mileage is worse than your car's."
"My car's gas mileage is worse than that of your car."
"My car's gas mileage is worse than your car's gas mileage."

These examples are all correct. The GMAT prefers the first two fixes because the third makes what they were testing too obvious. Moral of the story: whenever you notice this kind of mistake, look for the choices that include a possessive or "that" as a quick fix.

Mark