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If the DNA copying during reproduction were absolutely accurate every time, what would be the likely consequence for a species?

Question
If the DNA copying during reproduction were absolutely accurate every time, what would be the likely consequence for a species?
Faster reproduction only
No possibility of variation, reducing chances of survival if the niche changes
Immediate extinction of the species
Formation of only asexual offspring
Answer
No possibility of variation, reducing chances of survival if the niche changes
Detailed Explanation
Variation arising from imperfect DNA copying is important for survival if the environment/niche changes; without variation, a population would have little chance of surviving drastic change.
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