Which is better for a carecture description.
A
A1:In the picture, there are two men engaging in a foot match.
A2:There are two men playing football in the picture.
B
B1:The goalkeeper is convinced that he is too small to defend the gate.
B2:The goalkeeper is convinced that he is too small to stop the ball.
C
C1:Thet can't preserve their sanities （plural ）when confronted with challenges.
C2:Thet can't preserve their sanity（singular ）when confronted with challenges.
C3:Thet can't remain sensible when confronted with challenges.
C4:Thet can't be realistic when confronted with challenges.

Thanks a lot, and I wonder is it nature to use preserve in the last sentence.

Question

Which is better for a carecture description.
A
A1:In the picture, there are two men engaging in a foot match.
A2:There are two men playing football in the picture.
B
B1:The goalkeeper is convinced that he is too small to defend the gate.
B2:The goalkeeper is convinced that he is too small to stop the ball.
C
C1:Thet can't preserve their sanities （plural ）when confronted with challenges.
C2:Thet can't preserve their sanity（singular  ）when confronted with challenges.
C3:Thet can't remain sensible when confronted with challenges.
C4:Thet can't be realistic when confronted with challenges.

Thanks a lot, and I wonder is it nature to use preserve in the last sentence.

Answer

A- either is ok but use "playing " football A1 is a little more formal
B - either is ok but use goal not gate in football
C - I'm assuming this should be they in each sentence. C4 is the most natural and preserving ones sanity is a natural expression but would be used in the singular and it would be unusual to use it for a group of people but maybe for a couple " his parents preserved their sanity by focussing their attention elsewhere" but then the couple are being referred to as a single entity