Answer:
Thixotropic refers to a gel/substance that is thick and stable but will start to move or flow like a fluid when stress is applied (being shaken, stirred, placed under pressure, etc.). This is important to keep in mind when building houses as landslides or other disruptions and movements in the ground can happen during an earthquake with thixotropic clay in the soil, causing the buildings there to collapse or otherwise be damaged.
Answer:
,the principal at my school and the oldest staff member,
Explanation:
Appossitives are words or phrases that define or rename the noun that they follow. Besides, if they are non-restrictive clauses, they are usually separated from the noun and the rest of the sentence by commas, dashes or parenthesis. Thus, in the sentence given, the appositive phrase written within commas specifies who Mr. Dirksen is.
I think the answer is C/ the third option
