Answer:
Sal's father chipped away at the plaster walls because his wife had left him. They'd been renovating the old farm house together, and he continued to chip away every night while he waited to hear from her.
D. The tone that the author is writing with
Answer:
D. Exotic animals are more difficult and expensive to care for and as such should not be pets.
Explanation:
This as a claim summarizes the next two paragraphs so it's probably this.
The following excerpt supports the idea that applying the principles of conservation leads to greater efficiency in all aspects of life:
<em>"We are coming to see the logical and inevitable outcome that these principles, which arose in forestry and have their bloom in the conservation of natural resources, will have their fruit in the increase and promotion of national efficiency along other lines of national life."</em>