Correct option is C
Explanation-
Option a - Increased fruit size of tomato
Desired trait
Larger fruits mean more yield per plant, which is highly preferred during domestication.
Option b - Reduced spininess in okra
Desired trait
Less spiny or thorny vegetables are easier and safer to harvest, thus preferentially selected.
Option c - Shattering seeds of corn
Not desired
Seed shattering is when mature seeds fall off the plant spontaneously. In the wild, this helps in seed dispersal, but in agriculture, it causes yield loss.
So, non-shattering varieties are selected during domestication.
Therefore, selecting shattering is the opposite of what would be preferred.
Option d - Increased oil content of mustard
Desired trait
More oil = higher economic value, so this is preferentially selected.
Option c is correct because seed shattering is a trait that farmers try to eliminate during domestication, not encourage.
