Which would have most likely stopped Mendel from finding a pattern in his results

The options attached to the given question is attached here as well as in the comments of the question:

A.If having a wrinkled seed had been a recessive trait

B.If garden peas reproduced more quickly

C.If seed shape did not have a clearly dominant form

D.If having a smooth seed had been a dominant trait

The correct answer is - C. If the seed shape did not have a clearly dominant form.

Explanation:

Mendel studied and perform his research on seven different traits in peas, which are – height, seed color, flower color, and seed shape. In Mendel’s study, every trait has traits that are clearly either dominant or recessive.

Similarly, the seed shape has a very clear dominant form which is smooth seed dominant over wrinkled seed that is a recessive trait. If this clear dominant form or recessive form could not be established, then Mendel’s experiment would have most likely stopped its progress.