Correct Answer: C

Rationale: The correct answer is C: Digestive enzymes. The acrosome is a structure found in sperm cells that contains enzymes used to penetrate the egg during fertilization. Choice A (Lipids) and Choice B (Hormones) are incorrect as the primary content of the acrosome is digestive enzymes, not lipids or hormones. Choice D (None of the above) is incorrect as the acrosome does contain a specific substance, which are digestive enzymes.

Correct Answer: A

Rationale: The correct answer is A: Malaria. Malaria is a prevalent cause of abortion in Zambia due to its impact on maternal health. Malaria infection during pregnancy can lead to severe complications, including miscarriage. Choices B, C, and D are incorrect because while Tuberculosis, HIV, and Ascariasis are significant health issues, they are not the commonest cause of abortion in Zambia as Malaria.

Correct Answer: B

Rationale: The correct answer is B: Squamous epithelium. The vagina is lined with non-keratinized stratified squamous epithelium. This type of epithelium provides protection against abrasion and pathogens. Choice A, Ciliated epithelium, is incorrect as ciliated epithelium is found in areas like the fallopian tubes to help move the egg towards the uterus. Choice C, Columnar epithelium, is incorrect as columnar epithelium is typically found in areas like the intestines. Choice D, Transitional epithelium, is incorrect as this type of epithelium is found in areas like the urinary bladder.

Correct Answer: C

Rationale: A multi-sectoral approach involves collaboration among various sectors and stakeholders to address complex issues comprehensively. In this context, it ensures that different entities work together to provide inclusive and effective services. Choice A, 'Community participation,' focuses more on the involvement of the community specifically. Choice B, 'Peer consultation,' pertains to seeking advice or input from peers within the same field. Choice D, 'Appropriate technology,' refers to the use of suitable technology for a particular situation, which is not the primary focus of the described system.

Correct Answer: D

Rationale: To calculate the estimated percentage of deaths due to unsafe abortions, you divide the number of deaths due to unsafe abortions by the total number of maternal deaths and then multiply by 100 to get the percentage. In this case, with 591 maternal deaths and 40% estimated to be due to unsafe abortions, the calculation is (591 * 0.4) / 100, which equals 2.36. Therefore, the estimated percentage of deaths due to unsafe abortions from 591 maternal deaths per 100,000 live births is 0.4 or 40%. Choices A, B, and C are incorrect percentages that do not reflect the provided information.