______1., d.what system of measurement do foot,pound,and gallade belong?, a.non-standard, b. english, c. metric, d. both b and c, ______2. what is the basic unit of length in the metric system?, a. hour, b. tape measure, c. second, d. decade, ______3. what is the basic unit of length in the metric system., a. meter, b. kilometer, c. hectometer, d.dekameter