The main purpose of the last line of the passage is to signal the reader that steps will follow.
In the first part of the passage, the author is giving some <em>background information</em> about the topic, which functions as an introduction to develop the main topic. The last sentence serves <em>to trigger</em> what the passage is actually concerned in, that is, the different ways in which contamination by this bacterium can be avoided. Thus, what the reader is expecting after the last line are some steps to follow.
Answer:
a. A very young child; an infant.
b. An unborn child; a fetus.
c. The youngest member of a family or group.
d. A very young animal.
2. An adult or young person who behaves in an infantile way.
3. Informal
a. A lover or sweetheart.
b. Sweetheart; dear. Used as a term of endearment.
4. Slang An object of personal concern or interest: Keeping the boat in good repair is your baby.
adj. bab·i·er, bab·i·est
1. Of or having to do with a baby.
2. Infantile or childish.
3. Small in comparison with others of the same kind: baby vegetables.
tr.v. ba·bied, ba·by·ing, ba·bies
The correct answers among all the other choices are B. competitive and D. stubborn. These are character traits of jerry in "Through the tunnel." Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.
