Which of these is a challenge to social relationships as a result of nicotine and tobacco use? yellow teeth and nails
extra taxes on cigarettes
fear of expulsion from school
penalties from buying cigarettes if underage

yellow teeth and nails

Explanation:

The use of nicotine and tobacco for a long period of time can affect a person's physical appearance. Nicotine can stain the teeth by coming in contact with Oxygen. It also leaves a residue on the teeth that builds up over time. The nails also become yellow not only from the nicotine's direct stain, but due to the blockage of oxygen going to the nailbeds.

The discoloration of teeth and nails affect how a person looks like. When it comes to relationships, a person will most likely not get attracted to somebody with yellow teeth and nails. It then becomes a challenge to the relationship.

A. Yellow teeth and nails

Explanation:

taking the review right now :)

answer; ///(copd) chronic obstructive pulmonary disease,plz check first ///good luck