Is everybody born right-handed If not, why

A．He wanted Alice to come to the party, but she couldn’t.
B．He couldn’t invite Alice to the party because he wasn’t the holder.
C．He didn’t want to invite Alice to the party.
D．He couldn’t invite Alice to the party because there were already eight people.

A．He suggests Jane buy some gifts for the boy.
B．He suggests Jane move away from their neighbors.
C．He suggests Jane talk about the thing with his neighbors directly.
D．He suggests Jane find an opportunity to talk with his neighbors tactically.