In cases of visual search where targets are rarely present,: a) visual search is especially ...

In cases of visual search where targets are rarely present,:
 
  a) visual search is especially accurate.
   b) visual search is surprisingly inaccurate.
   c) visual search is about the same as it is in cases where targets are occasionally or frequently present.
   d) visual search is unnecessary.

Question 2

In their study of low-target prevalence searches, Wolfe, Horowitz, & Kenner found that (incorrect) target-absent responses on critical (target present) trials were _____ target-present responses on these trials.
 
  a) faster than
   b) slower than
   c) made with about the same speed as
   d) Participants never made target absent responses on critical trials.