MET

Score above 160 and you'll be able to get a seat in most of the top branches. If your concern is only about placements, then I would suggest go for Computer Science (CSE), IT or Computer and communication (CCE). Just keep your CGPA above the minimum eligibility criteria and you are good to go! However, if you have thirst for knowledge it won't matter in which branch you are in, you can easily succeed.
All the best!

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MU-OET Question & Sample Papers 2018:
Download previous year question papers and sample papers of MU-OET 2018 for your exam practice at the link provided below. Question Papers for MU-OET 2018 available on Shiksha will enable you to improve your speed and accuracy. You can download all last years' MU-OET exam question papers and sample papers free of cost. You can also download preparation guides for MU-OET designed by Shiksha experts. https://www.shiksha.com/university/manipal-academy-of-higher-education-manipal/exams/mu-oet/question-papers?course=1097.

I hope, you have received the rank too against your 89 marks out of 200. Mentioned below is the closing rank of MU Jaipur for Electronics and Communication Engineering.
Closing rank: 24335.

Yes, indeed you will be able re-write ME OET, but you have to pay Rs. 1400. I guess, we can write it 3 times.

Yes, with these marks you can get admission.

Go to university website search for previous year question papers. You can definitely get previous year question papers of MU-OET and M.Sc Clinical Embrology Course.