Which figure best represents the relation among Fathers, Teacher, Males?

Correct — A.
Rule: place the certain relation first, inclusion, then the classes that only overlap.

Every father is a male, so the Fathers circle lies wholly inside the Males circle.

Some teachers are fathers, some are males who are not fathers, and some are women. So the Teacher circle crosses both circles and runs outside Males.

Option (a) draws a small circle inside a large one, with a third circle overlapping both → option (a).

Why the others are wrong

• (b)
  Figure (b) — Three mutually overlapping circles leave room for a father who is not a male. Fathers must lie wholly inside Males.
• (c)
  Figure (c) — Option (c) is a chain of three circles, none inside another. Fathers must lie wholly inside Males, so no labelling of a chain works.
• (d)
  Figure (d) — Two separate circles inside a big one make every teacher a male and deny that any father teaches. Women teach, and fathers can be teachers.

A Venn-diagram item asks which picture fits three classes at once. Fix the certain relation first: every father is male, so Fathers sits inside Males.

Then place the loose class. Teachers include fathers, males who are not fathers, and women, so the Teacher circle must overlap both and reach outside Males.

Key facts

• All fathers are males, so Fathers lies wholly inside Males.
• Some teachers are fathers, some are males who are not fathers, and some are not males.
• Option (a) draws one circle inside another, with a third crossing both.

Common traps

• Putting Teacher inside Males, which forgets that women teach
• Choosing the three-way overlap, which lets a father fall outside Males

No directly related past PYQ was found.