Select the incorrectly spelt word from the given sentence.
I am studying about insects in zoology, and I have learned many things about butterflys.

Option (b) is the incorrectly spelt word.
Correct spelling: “butterflies.”
Meanings of all options:
· Learned → Acquired knowledge or skill.
· Butterflys → Incorrect; the correct spelling is "butterflies," which are insects with colorful wings.
· Insects → Small arthropod animals with six legs.
· Studying → The act of learning or examining something.