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(a) is the right answer as only (1) is grammatically correct. In (2) we need the plural verb HAVE with a singular verb HAS as the noun KNOWLEDGE is an uncountable noun and will assume a singular form. In (3) we need to replace the adjective ABYSMAL with the adverb ABYSMALLY as an adjective cannot qualify another adjective LOW. Thus, (a) is the right answer.
The autonomic nervous system controls which of the following?
Biogas which is used for cooking purpose is a mixture of which of the following two components?
Lichens are sensitive to which air pollutant?
What is the SI unit of force?
Proteins are assembled from how many amino acids?
Which of the following is NOT correct about the use of Quick lime?
What is the pH level of pure water?
Which of the following are examples of macro minerals?
The book ‘Fungi and Plant Diseases’ was written by:
The refractive index of water and turpentine oil are 1.33 and 1.47, respectively. A ray of light travels from
turpentine oil to water. The re...