Question 160 Deck Safety

The correct answer is D) "Unaone decimal terrathree". This is the correct method for sending the group 1.3 using the International Code of Signals. The code uses a standardized set of words to represent numbers and decimal points to ensure clear communication over radiotelephone. "Unaone" represents the number 1, "decimal" indicates the decimal point, and "terrathree" represents the number 3, resulting in the full expression "one decimal three". The other options are incorrect because they do not follow the standardized vocabulary and pronunciation rules of the International Code of Signals. For example, "one decimal three" (A) does not use the coded words, while "Wun point tree" (C) uses non-standard pronunciation.