What is the primary goal of automation testing?a) Eliminate the need for manual testing entirelyb) Reduce the need for skilled testersc) Increase the speed and efficiency of testingd) Decrease the cost of testing tools

The primary goal of automation testing is c) Increase the speed and efficiency of testing.

Automation testing is designed to make the testing process more efficient. By automating repetitive tasks, testers can focus on more complex testing scenarios. It helps to increase the speed of testing because tests can be run in parallel and continuously.

While automation testing can also help to reduce the need for manual testing (a), it doesn't eliminate it entirely. Manual testing is still necessary for exploratory testing, usability testing, and ad-hoc testing.

Automation testing may or may not reduce the need for skilled testers (b). While simple tests can be automated without much technical knowledge, designing, creating, and maintaining complex automated test scripts often require skilled testers.

As for d) Decrease the cost of testing tools, it's not necessarily true. While automation testing can save time and therefore reduce costs in the long run, the initial investment in automation tools and training can be significant.