The Arabian Peninsula known as Arabia is a peninsula located in Western Asia in the northeast of Africa on the Arabian plate. It is on the junction of Africa and Asia. It is east of Ethiopia and northern Somalia, south of Israel and Palestinian. It is known for it's physical features such as the plentiful precipitation, the Red sea, desert terrain, fertile farmland or soil, petroleum reserves and dry climate.
The chronometer is a device to measure time in a period of time, therefore not a correct answer.
Radiometric dating should be what they use