In this sentence, the action of visiting the university is identified as taking place earlier in time than the action of applying to go there. To reflect this, the past participle should be used for the earlier action, while the past tense should be used for the later action. Only the correct answer choice includes the correct verb tenses.

To talk about a hypothetical situation, you must use a verb that employs the subjunctive mood—"if I were" instead of "if I was," in the case of this specific sentence. “I was” is the simple past tense.

The phrase underlined in the sentence uses the modal verb "can," which conditions what might happen in the future. The verb form "clouds" is incorrect as the verb after "can" still needs to feature the singular form necessary with the subject "focus." "Can cloud a leader's judgement" is the best choice among the answer.

The sentence's introductory clause seems to intend to describe the subject "he," but it begins with a verb that doesn't clearly connect to the rest of the sentence and is grammatically incorrect. Introductory clauses can begin with participles, which would make much more sense in this sentence by allowing the start of the sentence to connect clearly to the subject. Of the potential answer choices, only "Having been immersed" omits the incorrect verb and replaces it with a grammatically correct participle. The other answer choices don't make sense: "Immersion having happened" and "Immersion happening" don't clearly connect the first phrase to the subject, and "He who had been immersed" introduces a grammatical error by making the sentence contain two disconnected subjects, "He who had been immersed in the literature since childhood" and "he." The corrected sentence reads, "Having been immersed in the literature since childhood, he maintained an appreciation for it as an adult."

The issue in the underlined portion of the sentence is the use of the verb form "existing," which is a participle and not an actual verb. The word needs to be changed into a form that functions as a verb. "Conflicting desires exist in every single person" is the correct choice among the answers.

The introductory phrase that is highlighted in the sentence describes the condition under which the woman reacted to her son's gift. Therefore, the verb form needs to describe a condition or way of being. Such a form is the present participle, which shows action currently being taken, and the correct answer is "Holding back tears."

The underlined portion of the sentence has a problem with the verb form "eating." The gerund form, used here, is inappropriate, as it is actually a verb that functions as a noun; therefore, the correct answer is "did not want to eat for a few hours."

The use of the verb "confused" creates many different problems in the sentence. By leading off a phrase, the word needs to be in a form that can link the phrase to the first part of the sentence. "Confusing the troops," which uses a past participle to describe the effect of the orders, is the correct answer choice.

The verb form used in the underlined section is completely wrong. The use of the present participle "seeing" confuses the meaning of the sentence and is unclear. The verb "went" needs a complement form, such as an infinitive. Therefore, the correct answer is "went to see."

The underlined portion of the senetence awkwardly separates out the seeing of ghosts from the rest of the sentence. The correct answer needs to smoothly place what people have done with those people as a subject. "Them see ghosts," is the best choice among the answer choices.