Which best describes derived characteristics?
they are newly evolved traits. they appear in all the ancestors. they appear at the end of each branch. they stem from primary characteristics.

They are newly evolved traits.

Explanation:

A shared character can be define as the character which is shared between the two lineages and that is common. A derived character can be define as the character that is evolved in the lineage leading to the formation of the clade that are common to the set members of the clade except from other individuals.  

On the basis of the above explanation, They are newly evolved traits. is the correct option.

answer: your mm

explanation:

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.