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'.

Q: Question: The cyclic electronic flow of photosynthesis: 
 Options:  <1> It uses the components of photosystem II together with plastocyanin and cytochrome b6f. <2> Generates ATP and NADPH. <3> It occurs in situations in which NADPH is in short supply. <4> It generates ATP without reducing NADP +. <5> Free O2.

A: 4
****
Q: Question: Question linked to image nº15 A 67-year-old patient who reported a decrease in unilateral visual acuity and rapidly evolving metamorphopsia. The attached retinography presents the image of the affected eye. The most likely diagnosis would be: 
 Options:  <1> Macular degeneration associated with exudative age. <2> Retinal detachment. <3> Retinitis pigmentosa <4> Central vein thrombosis of the ischemic retina. <5> Equatorial choroidal melanoma.

A: 1
****
Q: Question: Faced with a patient with diffuse otitis externa, what is the initial treatment? 
 Options:  <1> Surgery. <2> Antibiotics plus analgesics, both intravenously. <3> Antibiotics and analgesics, both orally. <4> Cleaning of the external auditory canal, topical antibiotic therapy plus oral analgesics. <5> Topical antibiotics

A:
4
****