Final answer:
The young guard gave Johnny D pictures of his family as hope.
Step-by-step explanation:
The gesture that the young guard did for Johnny D during his isolation was A) gave him pictures of his family as hope. This act of kindness provided Johnny D with a source of comfort and motivation during his difficult time. Gesture can be a movement usually of the body or limbs that expresses or emphasizes an idea, sentiment, or attitude
raised his hand overhead in a gesture of triumph
2
: the use of motions of the limbs or body as a means of expression
3
: something said or done by way of formality or courtesy, as a symbol or token, or for its effect on the attitudes of others
… a political gesture to draw popular support