Abstract nouns are essentially nouns that can be interpreted differently by different individuals, such as beauty or maturity. Going by this definition, the abstract noun in the given sentence should be "loyalty".
Answer:
if you think that a type of behavior or an idea is very bad and morally wrong, you can say that it is reprehensible.
Explanation:
The answer is A. Fossils have been found by the local science club. Since the verb, found, is being done to the subject, fossils, it is in the passive voice. The others are in the active voice since the action is being done by the subject.