Certain keys not working on my MacBook Air
About a year ago, certain keys (caps lock, tab, and fn) on my MacBook Air stopped working, but I ignored the issue because while inconvenient, these keys were not critical to the work I do.
Yesterday, however, more keys (left shift, left option, and control) stopped working. These keys are important, and this has severely impacted my ability to do my work.
How can I fix this?