Argument is saying Deers have some spots. Then it is says there could be ecological reason for the same.
Conclusion: They must be acting as a signal.
To strengthen we must specify something that proves the dotes are used as a signal.
A. Exceptional size and vigor also mark the subspecies of deer characterized by the best-defined dots :Additional Info. IRRELEVANT.
B. Grazing animals with a coat of uniform color may be harder to spot than spotted deer in certain tall grasses. Other Animals
...
Conclusion: They must be acting as a signal.
To strengthen we must specify something that proves the dotes are used as a signal.
A. Exceptional size and vigor also mark the subspecies of deer characterized by the best-defined dots :Additional Info. IRRELEVANT.
B. Grazing animals with a coat of uniform color may be harder to spot than spotted deer in certain tall grasses. Other Animals
...
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