Which method returns a collection of references to all instances of a certain element in an HTML document??

If your Android application works with OpenGL ES versions 1.0, 2.0, and 3.0, which version should you specify in the Google Play store?

a. 1.0 b. 2.0 c. 3.0 d. All versions

Which of the following statements contain variables whose values are replaced?

``` a) cin >> b >> c >> d >> e >> f; b) p = i + j + k + 7; c) cout << "variables whose values are replaced"; d) cout << "a = 5"; ```