The primary goal of a longitudinal study is to:

Correct Answer: C

Rationale: The correct answer is C: Examine changes over time. In a longitudinal study, researchers follow the same group of participants over an extended period to observe how variables change over time. This allows for the identification of trends, patterns, and developmental trajectories. Choice A is incorrect because a longitudinal study involves collecting data at multiple time points, not just one. Choice B is incorrect as investigating cause-and-effect relationships typically requires experimental designs, not just observational studies like longitudinal studies. Choice D is incorrect because longitudinal studies typically involve tracking specific individuals over time, not randomly selecting participants.

Correct Answer: B

Rationale: The correct answer is B: 2-3 drops into the conjunctiva. This is because eye drops should be administered directly onto the conjunctiva to ensure optimal absorption and effectiveness. Placing drops into the conjunctiva also helps to minimize spillage and ensures the medication reaches the intended target area. Other choices are incorrect because dropping the medication from inner to outer canthus (A) may cause the drops to miss the eye or flow out, and choice C and D are incomplete.

Correct Answer: A

Rationale: The correct answer is A: Fantasy filled imagination. At the age of seven, children typically engage in imaginative play and have a rich fantasy life. This is a crucial aspect of their spiritual development as it allows them to explore abstract concepts and emotions. It helps them develop empathy, creativity, and a sense of wonder. Going to church every Sunday (choice B) may be a part of religious upbringing but does not directly address the child's spiritual development at this age. Choice C and D are likely incomplete options.

Correct Answer: B

Rationale: The correct answer is B because painless lumps in the breast are more concerning as they are often associated with breast cancer. Painful lumps are more likely to be benign cysts or fibroadenomas. Choice A is incorrect as pain is not always an indicator of severity. Choice C is also incorrect as breastlessness is not a known term in medical context.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.