The third option will be the one
Primary Source because the primary come from the person who actually live through what they wrote.
And secondary comes from the primary source but they might change stuff so that’s why it is not reliable.
Answer: Because Antonio Meucci was a trained engineer, he was able to invent a “talking telegraph.”
Explanation: This is the correct answer because the cause of his invention is the fact that he is a trained engineer, and the effect is the creation of the talking telegraph.
Predicate nominative is also popularly known as the predicate noun. It is a noun, a pronoun or any nominal that follows the linking verb and most of the time the form of the verb be. It links or completes the linking and change the name of the subject. It complements or completes the verb in the sentence. However, predicate nominative completes only linking verbs. Predicate nominative can be compound while some do not have one. Therefore in the sentence "Sugar is the main ingredient in taffy", the predicate nominative is "ingredient".
