Question

the passage is adapted from prison daciss can a controversial in vitro fertilization process save the northern white rhino?, first published in 2018 in global voices (globalvoices.org) licensed under cc by.
on march 19, 2018, wildlife conservationists mourned the death of a 45 - year - old northern 61 white rhinoceros, named sudan, one of the last three remaining northern white rhinos on earth, and the only surviving male. keepers at the ol pejeta conservancy in kenya, where sudan lived, 62 will euthanize the ailing rhino to end his age - related suffering.
63 due to conservation efforts, there are only two remaining northern white rhinos left in the world—both female and part of sudan’s family: daughter najin and granddaughter fatu. scientists now hope for the continuation of the species via a controversial and highly technical in - vitro fertilization (ivf) process.
now, najin and fatu under 24 - hour guard in kenya to protect them. 64 in practice, scientists intend to harvest their eggs to create viable embryos with sudan’s frozen sperm and then implant them into female southern white rhinos (a closely related subspecies) to create the first “pure” northern white rhino calves.
65 while the future of the procedure is hypothetical, scientists hope the team’s groundbreaking procedures to create new life... (the following text is not fully displayed)

1. white rhinoceros, named sudan, one

a) no change
b) white rhinoceros named sudan, one
c) white rhinoceros named sudan one
d) white rhinoceros, named sudan; one

1. will euthanize

a) no change
b) will have euthanized
c) euthanized
d) euthanizing

1. due to conservation efforts

a) no change
b) before the tragedy
c) without any explanation
d) after sudan’s passing

1. (the original question text is not fully clear, options are: a) no change; b) in fact; c) (an option is not fully displayed); d) (an option is not fully displayed))
2. (the original question text is not fully clear, options are: a) no change; b) (an option is not fully displayed); c) (an option is not fully displayed); d) (an option is not fully displayed))

Explanation:

1. The original phrase is concise and correctly appends the identifying information without redundancy. Option A avoids awkward repetition seen in the other choices.
2. The event (euthanizing Sudan) occurred in the past (2018), so the simple past tense "euthanized" is grammatically correct.
3. The sentence needs a phrase that connects Sudan's death to the remaining rhinos being the last of their kind. "With Sudan's passing" logically establishes this context.
4. The correct preposition to pair with "protect" in this context is "from", as it indicates the source of harm (poachers) that the rhinos are being guarded against.

Answer:

1. A) NO CHANGE
2. C) euthanized
3. D) With Sudan's passing
4. B) from