What is the most effective way to combine sentences 6 and 7? A. Background noises and sound effects cannot be adequately recorded during
filming these, including such things as roaring cars, galloping horses, or the
gentle tapping of pencils on desks.
B. Background noises and sound effects cannot be adequately recorded during
filming when they include such things as roaring cars, galloping horses, or
the gentle tapping of pencils on desks.
C. Background noises and sound effects, such as roaring cars, galloping
horses, or the gentle tapping of pencils on desks, cannot be adequately
recorded during filming.
D. Background noises and sound effects cannot be adequately recorded
because such things as these roaring cars, galloping horses, or the gentle
tapping of pencils on desks are included during filming.

(6) Background noises and sound effects cannot be adequately
recorded during filming. (7) These include such things as roaring cars, galloping
horses, or the gentle tapping of pencils on desks.