fix: Q71 answer correction, Q39 wording, remove bogus Oswald terms

Matthias Nott

2026-03-22 c7fe4faf1aab7bd121763380c10be86d95a80333

 SPL Exam Questions EN/40 - Human Performance.md
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@@ -574,9 +574,7 @@
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 #### Key Terms
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-- **D** — Drag
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 D — Drag
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 ### Q28: Which optical illusion might be caused by a runway with an upslope during the approach? ^t40q28
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 [DE](../SPL%20Exam%20Questions%20DE/40%20-%20Menschliches%20Leistungsverm%C3%B6gen.md#^t40q28) · [FR](../SPL%20Exam%20Questions%20FR/40%20-%20Performances%20humaines.md#^t40q28)
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@@ -663,9 +661,7 @@
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 #### Key Terms
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-- **D** — Drag
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 D — Drag
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 ### Q32: Visual illusions are mostly caused by ^t40q32
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 [DE](../SPL%20Exam%20Questions%20DE/40%20-%20Menschliches%20Leistungsverm%C3%B6gen.md#^t40q32) · [FR](../SPL%20Exam%20Questions%20FR/40%20-%20Performances%20humaines.md#^t40q32)
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@@ -2446,9 +2442,7 @@
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 #### Key Terms
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-- **D** — Drag
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 D — Drag
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 ### Q116: What does the term Red-out mean? ^t40q116
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 [DE](../SPL%20Exam%20Questions%20DE/40%20-%20Menschliches%20Leistungsverm%C3%B6gen.md#^t40q116) · [FR](../SPL%20Exam%20Questions%20FR/40%20-%20Performances%20humaines.md#^t40q116)