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Option B combines with a semicolon, correctly linking two related independent clauses. Option A creates a run-on without proper punctuation. Option C is acceptable but slightly wordy with “and they also.” Option D introduces “while,” which implies contrast, not addition. GED writing prefers concise, grammatical connections. Test strategy: check if each sentence can stand alone—if yes, semicolon or conjunction needed.

This is a proportional reasoning problem, a common GED Math skill. First, find the unit rate: $4.50 ÷ 3 = $1.50 per pound. Multiply by 5 pounds: 5 × 1.50 = $7.50. Therefore, Option C is correct. Option A reflects dividing incorrectly or estimating; Option B comes from rounding down; Option D comes from multiplying 3 × 2. To avoid errors, always reduce to a unit price and then scale. On the GED, ratio and proportion questions often involve real-world contexts such as food costs, fuel usage, or travel times. The key is consistency in units: dollars per pound here. Quick checks: 3 pounds cost $4.50, so 6 pounds would cost $9; 5 pounds should be slightly less than $9—$7.50 fits.

Socialism involves government control of key industries (utilities, healthcare, transportation) but may allow limited private enterprise. Option B is correct. Capitalism (A) relies on private ownership and markets. Communism (C) seeks total government/collective control, eliminating private property. Mercantilism (D) is a historic system focused on trade balance and colonial wealth. On GED Social Studies, identify contrasts: Capitalism = private + markets; Socialism = mixed public/private; Communism = full state control; Mercantilism = trade-focused. The question highlights “government ownership + some private enterprise,” pointing squarely to socialism.

Gametes are produced by meiosis, a specialized cell division reducing chromosome number by half (haploid). This ensures that when sperm and egg fuse at fertilization, the resulting zygote has the correct diploid number. Option C is correct. Option A (mitosis) produces identical body (somatic) cells. Option B (fertilization) combines gametes, not creates them. Option D (replication) refers to DNA copying prior to division. GED Science expects you to distinguish mitosis vs. meiosis: mitosis = growth/repair, identical cells; meiosis = gametes, genetic variation. Key features: crossing over, reduction from diploid to haploid.

Electrons are negatively charged particles orbiting the nucleus. Option C is correct. Protons are positive, neutrons neutral, nucleus contains both protons and neutrons. GED Science frequently asks about atomic structure: protons = +1 charge, neutrons = 0, electrons = –1. Charge balance: in a neutral atom, protons = electrons. Remember: “e– for electron, e– for negative.”