a. True, this statement is current.
Current means that the activity or thing that is being described is happening, being done or being used right now.
From the statement provided, the author uses the verb 'are' which is the current version of the verb 'to be
The statement, therefore, means that the growth of whales is happening actively and currently though the statement was issued in the current version in the year 1967.
A statement can be in past, present, or future tense depending on the verb used. A current statement uses a verb that is in the present tense. Like 'are' used in the statement.
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