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Conjunctive adverbs (e.g., therefore, however, moreover, consequently) connect two independent clauses and must be preceded by a semicolon and followed by a comma when they appear mid-sentence. Option B follows the correct structure: “The data were incomplete; therefore, we postponed the release.” Option A commits a comma splice by joining two independent clauses with only a comma. Option C omits the comma after “therefore” and adds an erroneous comma after “we,” interrupting the subject–verb flow. Option D also yields a comma splice. On the PERT Writing section, sentence-boundary control is critical: use a period, a semicolon, or a comma plus a coordinating conjunction (FANBOYS) to join independent clauses. With conjunctive adverbs, remember this reliable template—“…; however, …”—to avoid splices and ensure professional, clear prose suitable for academic writing, reports, and email communication.

The passage emphasizes the engineer’s design choices—strength and durability for safety. Option A is correct. Options B, C, and D contradict the passage. PERT reading questions often focus on purpose and emphasis, requiring students to infer the primary goal of a description. Here, words like “withstand” and “ensuring safety” highlight durability and safety as the main point.

By the Pythagorean Theorem, c2=a2+b2c^2 = a^2 + b^2. With legs a=9a = 9 and b=12b = 12, compute 92+122=81+144=2259^2 + 12^2 = 81 + 144 = 225. Take the positive square root (hypotenuse is a length): c=225=15c = \sqrt{225} = 15. Thus, option C is correct. This (9,12,15)(9,12,15) set is a scaled version of the well-known primitive triple (3,4,5)(3,4,5) multiplied by 3, a helpful recognition to speed up testing. PERT Math includes right-triangle problems to assess geometric reasoning and familiarity with common triples. Typical pitfalls include adding legs then squaring, or forgetting to square both legs before adding. Checking reasonableness helps: the hypotenuse must be longer than either leg (15 > 12), so options like 13 can be plausible but require calculation; 21 would be too large for these legs. Comfort with these patterns accelerates problem solving under time constraints.

✅ Batch 7 (Questions 61–70) completed.

Want me to continue straight into Batch 8 (Questions 71–80)?

Perfect ✅ Let’s roll into Batch 8 (Questions 71–80) for the PERT Practice Exam by CLI.

We’ll keep the structure consistent, with detailed explanations for Mathematics, Reading, and Writing.

Here are the Main Topics:

• Mathematics

• Reading

• Writing

Batch 8: Questions 71–80

“They’re” is the contraction for “they are,” fitting the future action; “their” marks possession for “results.” Thus, “They’re going to announce their results tomorrow” is correct. Option A misuses “their” for “they’re” and “there” for “their.” Option C repeats both errors in different positions. Option D misuses “there” and adds an apostrophe to a simple plural (“results”). PERT Writing regularly checks high-frequency homophones because they are common error sources that undermine credibility. A quick tactic: expand “they’re” to “they are”; if it still reads naturally, you’ve got the right form. Use “there” for location or existential constructions (“There are…”), and “their” to indicate ownership.

Inside parentheses: 42=164^2 = 16. Divide by 2 → 8. Now compute 15−8=715 - 8 = 7. Correct answer: B (7), not C. On PERT, strict PEMDAS matters: exponents first, then division, then subtraction. Re-checking prevents missteps.