Using word-part and contextual clues, we may infer that "biotelemetry" means the monitoring and measuring of a living organism’s ______ by the use of telemetry techniques.

A．Limited improvements in some subjects.
B．Remarkably better gains in reading scores.
C．A subtle weakening of students’ readiness for active participation in learning.
D．Both A and C.

A．Her back hurt during the meeting.
B．She agreed that it was a good meeting.
C．The proposal should be sent back.
D．His support would have helped this morning.