Step 1: Understanding Google's acquisition strategy.
Google has acquired many companies over the years to enhance its services, expand its portfolio, and enter new markets. This includes the acquisition of Motorola Mobility, which was a significant deal, and the acquisition of multiple companies over time.
Step 2: Analyzing the options.
(A) Over 100 companies: Correct, Google has acquired over 100 companies since its founding.
(B) Motorola Mobility for \$12.5 billion: Correct, Google acquired Motorola Mobility for this amount in 2012.
(C) Companies based in or around San Francisco Bay area: Correct, many of Google’s acquisitions are based in Silicon Valley.
(D) More than one company per week since 2010: Correct, Google has acquired multiple companies at a rapid rate, including more than one per week in some years.
(E) All of the above: Correct, all the above options are true regarding Google's acquisition strategy.
Step 3: Conclusion.
The correct answer is (E) All of the above, as Google’s acquisition activities align with all of the options provided.