Once it was introduced, almost every movie made used which of the following technologies?

In a speech examining how America transports its goods, Scott offered as his thesis

that "America relies on four principal modes of transport". In his preview he noted that those modes consisted of rail, water, truck, and air, and that he would discuss each in turn. In the body of his speech he discussed rail and truck at great length but provided little development for water and air. Scott needs to rethink the organization of his speech in terms of _____. A) strategy B) symmetry C) placement of ideas D) suitability to the situation

The ability to vary your pitch is known as _____

Fill in the blanks with correct word