In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Question: Friedel-Crafts alkylation reactions lead to products that: 
 Options:  <1> They facilitate diazotization reactions. <2> They facilitate the reactions of formation of ethers. <3> Activate the aromatic ring against other substitutions. <4> They deactivate the aromatic ring against other substitutions. <5> None of the above.
3

Question: If I can not learn my new phone number because I always see the first three digits of the old one, what is the name of that type of interference? 
 Options:  <1> Proactive <2> Retroactive. <3> Coactive <4> Reactive <5> Protoactive
1

Question: How many chromosomes would a male with nulisomy have for chromosomes 17 and 18? 
 Options:  <1> 43 <2> Four. Five. <3> 44 <4> 42 <5> 40

4