Which is correct? firmly or sensibly?

I want to get some advice. From Korean high school test, the response to the answer was divided "firmly or sensibly". I can’t tell [firmly / sensibly] below summary box. Please tell me "what difference ", "this options are properly presented", and "the possibility that "firmly" can be answer. (+ If I consider firmly as strongly, Can "firmly" be a answer in summary box?)

In Cambridge Dictionary,

• Firmly : strongly and tightly
  example) He shook my hand firmly and climbed into the taxi.
• Sensibly : in a sensible or practical way:
  example) The police praised motorists for driving sensibly in the appalling conditions.
  She wasn’t very sensibly dressed for hiking.

It is important to remember that computers can only carry out instructions that humans give them. Computers can process data accurately at far greater speeds than people can, yet they are limited in many respects ― most importantly, they lack common sense. However, combining the strengths of these machines with human strengths creates synergy. Synergy occurs when combined resources produce output that exceeds the sum of the outputs of the same resources employed separately. A computer works quickly and accurately; humans work relatively slowly and make mistakes. A computer cannot make independent decisions, however, or formulate steps for solving problems, unless programmed to do so by humans. Even with sophisticated artificial intelligence, which enables the computer to learn and then implement what it learns, the initial programming must be done by humans. Thus, a human‒computer combination allows the results of human thought to be translated into efficient processing of large amounts of data.

Summary Box
: Integrating the advantages of computers running accurately with the strong points of humans working [firmly / sensibly] generates synergy.