"I" is in regards to yourself, you and any humans name are proper nouns that you go by. "a" is not a proper noun it is describing the quantity or the subject of the matter, Ex- [I] love it when [a] cool summer day takes place in my area.
{Bad sentence, sorry}
Answer:
I think B is the best description of chromosomes because it describes them and gives relevent information about what they do.
My brother is writing a story about a soldier in vietnam is in the progressive tense of the verb.
Generally speaking, a verb is a term (part of speech) that denotes an action (bring, read, walk, run, learn), an occurrence (happen, become), or a state of being in grammar. The Latin verbum, which meaning "word," is where the term verb originates (be, exist, stand). The fundamental form used to describe English is the infinitive, with or without the word to. In many languages, verbs are inflected (modified in form) to indicate tense, aspect, mood, and voice.
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A supporting and an argumentative claim
