This paragraph lacks sentence variety because the writer, started sentence after sentence the <em>same way</em>. didn't include structure with proper legth or that provides emphasis. <em>Prepositional phrase, adverbial clause, adverbs</em> (absolutely; naturally) or some<em> connective</em> (therefore; and; besides etc) are great help to <em>avoid monotony.</em>
Correct answer # 2: The world's nations must cooperate; one nation cannot solve the world's problems by itself.
When you connect two related independent clauses or sentences you use a semicolon. Both sentences should be completed grammarly writtend and with a connection. Make sure you do not write a capital letter after the semicolon, unless it is a proper name.
Answer # 3 is incorrect as there is a capitalized word
Answer # 1 it is incorrect to use "for" as the sentence is grammarly completed
Ann is the subject of the sentence
has taught is the verb phrase
students is the direct object
junior high are adjectives that modify the direct object students
for several years is a prepositional phrase that modifies the verb taught
B. Casual. she is asking a question in a normal way so she isn’t being odd or acting some type of way. Please mark me brainliest