He ingnored certain compelling factors which prove potent influence on the result

He ingnored certain compelling factors which were proven to have potent influence on the result.
被证明，所以是用were proved

He ingnored certain compelling factors which were proven to have potent influence on the result.

He ingnored certain compelling factors which have potent influence on the result。
have influence on 对...有影响

好像是要把prove改成proved，factors是‘被’证明，要用被动语态，二楼的该法也对，但我觉得这里的考点应该是考察prove的被动

在which prove potent influence