Answer:
- Safety, Concern.
Explanation:
Abstract nouns are exemplified as the naming words or nouns that denote an abstract or immaterial thing like an idea, feeling, quality, emotion, or any other intangible idea or concept contrary to physical or concrete object.
In the given sentence, the group of words that exemplify the abstract noun are 'safety and concern' as they they both denote either abstract situation('safety') or a feeling(concern). Both these words demonstrate immaterial states that do not contain physical existence and exist abstractly. Thus, <u>'safety, concern'</u> group is the answer.
There is 18 people in the line
History of citizenship<span> describes the changing relation between an individual and the state, commonly known as </span>citizenship<span>. Citizenship is generally identified not as an aspect of Eastern civilization but of </span>Western civilization.<span>There is a general view that citizenship in ancient times was a simpler relation than modern forms of citizenship, although this view has been challenged.</span>
Answer:
B. fixed-interval
Explanation:
During a typical morning, Colin will check the clock more frequently as the time for his regularly scheduled lunch break approaches. In this case, Colin's clock checking behavior is reinforced on a fixed-interval schedule
A fixed-interval schedule is kind of schedule which involves reinforcement, where the initial or first response is rewarded after a predetermined amount of time as passed or go by.
