Jenkins build job cannot be triggered manually?

jenkins can be configured for monitoring external jobs such as cron jobs:
functional testing can be automated using jenkins
record of multiple builds is displayed using a
which of the following statement is correct about the build status images?
a build can be triggered
copy artifacts' is an option that is available for selection under the
jenkins can be configured to check for changes on a url to trigger build.which of the following statement is not correct about jenkins

Upstream/Downstream triggers by other Jenkins jobs. This is mainly used to identify the nature of the builds - be it nightly, manual, automated, etc. Jenkins build job cannot be triggered manually. Choose the correct option from below list (1)False (2)True Answer:-(1)False Jenkins build job cannot be triggered manually. Select the best answer from below options (a)False (b)True. Question Tags: Jenkins, Jenkins-trigger. When creating an initial job that manually triggers a downstream job in the post-build actions, the downstream job cannot be started using the Delivery Functional testing can be automated using Jenkins=true. Jenkins build job cannot be triggered manually=false. Build can be triggered =allJenkins build job cannot be triggered manually.Choose the correct option from below list(1)False(2)True.