Pasagot po please need lang po

Consider the series where in this problem you must attempt to use the ratio test to decide whether the series converges. compute enter the numerical value of the limit l if it converges, inf if it diverges to infinity, minf if it diverges to negative infinity, or div if it diverges but not to infinity or negative infinity.

1. which of these is not true about torsion bars? a. they can be used to adjust ride height b. they can be adjusted anytime since they don't affect alignment angles c. they attach between the frame and the lower control arm d. they twist to produce a spring effect

is on drugs i swear i ask a question and its not showing whats going