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: What thrombophilia study would be of interest to a woman with repeat abortions? 
 Options:  <1> Determination of fibrinogen. <2> C-reactive protein. <3> PAI-1. <4> Lupus anticoagulant. <5> Reptile time.
4

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: Which of the following membranes would be more fluid: 
 Options:  <1> Lipid bilayer with polyunsaturated fatty acids of 18 carbon atoms. <2> Lipid bilayer with saturated fatty acids of 18 carbon atoms. <3> Lipid bilayer with saturated fatty acids of 16 carbon atoms. <4> Lipid bilayer with polyunsaturated fatty acids of 16 carbon atoms. <5> All are equivalent in terms of fluency.

4