The correct answer is: B. can transfer his share to an outsider with the consent of majority partners.
A partner in a firm can transfer his share to an outsider with the consent of majority partners. This is because, under the Partnership Act, 1932, a partner has the right to transfer his share in the firm to any other person with the consent of all the other partners. However, if the other partners do not consent to the transfer, the partner can still transfer his share to an outsider, but only with the permission of the court.
Option A is incorrect because a partner can transfer his share to an outsider with the consent of majority partners.
Option C is incorrect because a partner cannot transfer his share to an outsider without the consent of any other partners.
Option D is incorrect because a partner can transfer his share to an outsider with the consent of majority partners, not all other partners.