In signing jackie robinson to play major league baseball, branch rickey felt that his was just as important as his baseball skills.

The correct answer is CHARACTER.

Explanation:

Because Jackie’s color, he was not playing in the Major Leagues where white people competed but in the Negro League. In 1945, he had an agreement with Branch Rickey to play for the Major League in a team that Rickey was president. He did not want just a black player but someone who can deal with the insults and racial pressure that playing in the white’s league will lead and when signed the agreement Jackie promised he will not show himself angry while playing.  

the 2nd option is the answer