Answer: A. Word of mouth is a useless data source.
Explanation: Experimentation refers to an empirical procedure or process which is used to validate an hypothesis or establish a fact. However, experimentation requires rules which guides the process, these rules are necessary in other to avoid bias, false conclusions or inference.
According to the options given in the question above, facts used in experimentation should be traceable and reproducible. Word of the mouth is a useless data source as it usually has no empirical basis. Expert opinion or information being established by three or six sources could be considered as a fact.
Coughing and making noise is one of the symptoms of croup.
<h3>What is the synonym?</h3>
The word synonym is defined as the complementary words that give the same meaning of a particular word, this can be used in place of the another word.
It is also determined as a language unit or phrase that has the aforementioned meaningful as some other word or phrase in the same language, such as shut and close. like coughing and making noise is one of the symptoms of croup.
Therefore, the synonym of Coughing is the croup.
learn more about the synonym, refer to:
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Answer:
Aphrodite, ancient Greek goddess of sexual love and beauty, identified with Venus by the Romans.
Explanation:
