Hi, my take is D for the following reasons:
A large number of educators surveyed view that higher education especially in technology subjects as Electronics and Civil Engineering is outdated at present but that they will or could be made appropriately contemporary in the near future.
but is introducing contrast surveyed view higher education is outdated.... and it can be made contemporary in near future .... make the two clauses parallel.
A. that they will, or could,
Incorrect. "They" is used wrongly here , incorrectly pointing to educators instead it should point to education.
B. that they would, or could,
Incorrect. Same mistake here.
C. it will be or could
Incorrect. will be and could not parallel also but makes two clauses parallel both must begin with that ...
D. believe that such education will be or can
Correct. Parallelism is correct here with the use of "view that" and "believe that". Since the sentence makes prediction and believe/view conveys the simple present tense, usage of will and can is correct here.
E. believe that such education would or could
Incorrect. Parallelism is correct here with the use of "view that" and "believe that". Since the sentence makes prediction and believe/view conveys the simple present tense, usage of would and could is used for past elements also, it conveys uncertainty . whereas the main sentence uses Can to denote the certainty.
If explanation helped you .... Give Kudos