An action taken by employers or by the government against workers who wanted to organize was
a. collective bargaining
b. boycotts
c. union
d. busting arbitration

Correct answer choice is :

Union busting is a series of actions undertaken to obstruct or inhibit the formation of trade unions. Union busting tactics can lead to both legal and illegal movements and can vary anywhere from complex to the extreme.

all freedom fighters demanded for constitution. so british finally granted india it's freedom. then a constituent assembly was formed. it's chair man was rajendra prasad and its deputy chairman was dr. br ambedkar.

this assembly take the time of about one year than our constitution was finally formed.

explanation:

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.