Participants in a concept learning study solve several anagram puzzles over the course of 30 minutes. even though the puzzles were known to be of equal difficulty, participants solved the puzzles in less and less time as the 30 minute period progressed.
this is likely the result of a(n) effect.

a) contrast
b) fatigue
c) practice
d) boredom

(C) Practice

Explanation:

The practice effect are one of the type test result effect that basically occur when the test are taken multiple practices.

This type of effect is basically result into the improvement in the given experimental result by practicing the activities. It also helps in improve the efficiency of the performance.

According to the given question, the leaning study concept is basically result into the practice effect as it helps in solving the various types of puzzles in the given specific time.

Therefore, Option (C) is correct.  

new communications technology has affected the way social movements are organized because nowadays, social movements rely on social networks and the media to get different people with a similar way of thinking in contact, and thus, get them to mobilize for a greater cause.

individuals only participate in collective action when they feel identified with it. is in this aspect that social media becomes relevant, because it guarantees communication among all individuals and organizes the social actions that are going to be carried out, i.e., the social movements.

in addition, being covered by the media is important to validate the message and make it relevant in the social agenda, as well as to reach more people who can share interests, appealing to public sympathy for their cause.

in conclusion, it is by social networks and social media that social movement is given birth; by connecting different individuals with similar ideas and organizing them to mobilize for a greater cause.

well 1 they have there leader that controls them