Which reproductive strategy does an organism use if it reproduces slowly and has only one offspring each time it reproduces? a)r-strategy b)environmental load c)endangered d)k-strategy

The answer is D. K-strategy reproduction involves  reduced quantity of offspring with a corresponding increased parental investment. This is as opposed to r-strategy reproduction which involves the increased quantity of offspring at the expense of individual parental investment. An example of K-strategy reproduction is that of whales.