The correct answer to this open question is the following.
Although there are no options provided, we can say that tensions and conflicts in the mid-twentieth century democratic process that the MFDP expose in its struggle for recognition by the Democratic Party were the following.
We are talking about the Mississippi Freedom Democratic Party. This party had tensions and conflicts with the Democratic Party because in that time the Democratic Party members in Mississippi were white people. Southern black people were trying to get the right to vote, but they encounter the fierce opposition of whites. So in April 1964, the MFDP was founded to encourage African Americans to register and vote. Indeed, MFDP delegates decided to participate in the National Democratic Party Convention, in Atlantic City.