Read the Paragraph Below and Answer the Questions That Follow

Read the paragraph below and answer the questions that follow.
(1) The United States is dealing with many invasive species, which are non-native plants, animals, and insects that are harmful to the area they invade. (2) For example, the fast-growing kudzu vine is known as the "vine that ate the South" because it covers trees and other vegetation, blocking their access to sunlight and killing them. (3) Formosan termites from East Asia are now responsible for millions of dollars in damage to homes and properties in Louisiana and other parts of the southeastern United States. (4) African honey bees, which spread from South America and Central America into America's Southwest, have been known to chase down and kill people and animals. (5) In the Great Lakes, Asian carp, imported in the 1970s to clean up algae, are now pushing out other kinds of fish and disrupting the lakes' ecosystem. (6) In Florida's Everglades, huge pythons descended from abandoned pets are threatening everything from crocodiles to livestock to children.
Select the number of the sentence containing a transitional expression that introduces an illustration.

A) Sentence 2
B) Sentence 3
C) Sentence 6