Two main measures for the efficiency of an algorithm areQuestion 8Answera.Data and spaceb.Time and spacec.Processor and memoryd.Complexity and capacity

To determine the correct answer to the question about the two main measures for the efficiency of an algorithm, let's analyze the options provided.

1. Understanding Algorithm Efficiency: Algorithm efficiency typically concerns how effectively an algorithm utilizes resources. Two primary resources are involved: time (how long it takes to execute) and space (how much memory it requires).

2. Analysis of Options:

   • a. Data and space: While data is important in understanding algorithms, it is not a primary measure of efficiency.
   • b. Time and space: This option accurately reflects the main measures of algorithm efficiency—time complexity (how quickly an algorithm runs) and space complexity (how much memory it uses).
   • c. Processor and memory: Although related to performance, these terms are not standard measures for algorithm efficiency.
   • d. Complexity and capacity: Complexity can refer to time or space complexity, but capacity is not a standard measure in this context.

Given this analysis, the correct answer is b. Time and space. These are the two main measures used to evaluate the efficiency of algorithms.